./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.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-rel/rfi009_power.opt_pso.oepc_pso.opt_rmo.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/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi009_power.opt_pso.oepc_pso.opt_rmo.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 00:03:28,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:03:28,558 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:03:28,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:03:28,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:03:28,588 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:03:28,589 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:03:28,590 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:03:28,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:03:28,593 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:03:28,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:03:28,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:03:28,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:03:28,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:03:28,596 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:03:28,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:03:28,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:03:28,596 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:03:28,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:03:28,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:03:28,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:03:28,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:03:28,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:03:28,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:03:28,599 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:03:28,599 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:03:28,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:03:28,600 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:03:28,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:03:28,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:03:28,601 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:03:28,601 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:03:28,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:03:28,602 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:03:28,602 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:03:28,602 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:03:28,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:03:28,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:03:28,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:03:28,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:03:28,603 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:03:28,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:03:28,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:03:28,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:03:28,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:03:28,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:03:28,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:03:28,857 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:03:28,857 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:03:28,858 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 00:03:28,931 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:03:28,931 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:03:28,931 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 00:03:30,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:03:30,439 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:03:30,440 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 00:03:30,454 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/981c48a58/286b580396cc456c80c6e83318276495/FLAGfd26c7e06 [2024-06-28 00:03:30,468 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/981c48a58/286b580396cc456c80c6e83318276495 [2024-06-28 00:03:30,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:03:30,470 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:03:30,472 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:03:30,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:03:30,476 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:03:30,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:03:28" (1/2) ... [2024-06-28 00:03:30,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37567db3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:03:30, skipping insertion in model container [2024-06-28 00:03:30,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:03:28" (1/2) ... [2024-06-28 00:03:30,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@603fcff6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:03:30, skipping insertion in model container [2024-06-28 00:03:30,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:03:30" (2/2) ... [2024-06-28 00:03:30,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37567db3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:30, skipping insertion in model container [2024-06-28 00:03:30,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:03:30" (2/2) ... [2024-06-28 00:03:30,482 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:03:30,507 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:03:30,508 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ! multithreaded || (((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:03:30,509 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ! multithreaded || (((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:03:30,509 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ! multithreaded || (((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EAX) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )__unbuffered_p1_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-28 00:03:30,509 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:03:30,509 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-28 00:03:30,550 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:03:30,896 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:03:30,908 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:03:31,042 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:03:31,088 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:03:31,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31 WrapperNode [2024-06-28 00:03:31,089 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:03:31,090 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:03:31,090 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:03:31,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:03:31,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,106 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,128 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 148 [2024-06-28 00:03:31,129 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:03:31,129 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:03:31,129 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:03:31,129 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:03:31,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,139 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,141 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,161 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 00:03:31,164 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,164 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,170 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,183 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,197 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:03:31,199 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:03:31,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:03:31,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:03:31,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (1/1) ... [2024-06-28 00:03:31,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:03:31,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:03:31,250 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 00:03:31,272 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 00:03:31,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:03:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:03:31,294 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:03:31,294 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:03:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:03:31,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:03:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:03:31,295 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:03:31,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:03:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:03:31,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:03:31,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:03:31,298 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 00:03:31,444 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:03:31,447 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:03:31,781 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:03:31,781 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:03:31,895 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:03:31,895 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:03:31,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:03:31 BoogieIcfgContainer [2024-06-28 00:03:31,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:03:31,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:03:31,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:03:31,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:03:31,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:03:28" (1/4) ... [2024-06-28 00:03:31,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a7fbb5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:03:31, skipping insertion in model container [2024-06-28 00:03:31,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:03:30" (2/4) ... [2024-06-28 00:03:31,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a7fbb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:03:31, skipping insertion in model container [2024-06-28 00:03:31,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:03:31" (3/4) ... [2024-06-28 00:03:31,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62a7fbb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:03:31, skipping insertion in model container [2024-06-28 00:03:31,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:03:31" (4/4) ... [2024-06-28 00:03:31,903 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 00:03:31,917 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:03:31,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 00:03:31,918 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:03:31,953 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:03:31,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 00:03:32,028 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-28 00:03:32,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:03:32,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:03:32,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-28 00:03:32,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-28 00:03:32,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:03:32,061 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;@11418d45, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:03:32,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 00:03:32,064 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:03:32,065 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:03:32,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:03:32,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:32,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:03:32,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:32,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:32,074 INFO L85 PathProgramCache]: Analyzing trace with hash 399192754, now seen corresponding path program 1 times [2024-06-28 00:03:32,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:32,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673336132] [2024-06-28 00:03:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:32,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:32,658 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 00:03:32,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:32,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673336132] [2024-06-28 00:03:32,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673336132] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:32,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:32,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:03:32,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10380887] [2024-06-28 00:03:32,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:32,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:03:32,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:32,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:03:32,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:03:32,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-06-28 00:03:32,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:32,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:32,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-06-28 00:03:32,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:32,868 INFO L124 PetriNetUnfolderBase]: 421/736 cut-off events. [2024-06-28 00:03:32,868 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2024-06-28 00:03:32,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1444 conditions, 736 events. 421/736 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4022 event pairs, 155 based on Foata normal form. 3/696 useless extension candidates. Maximal degree in co-relation 1432. Up to 627 conditions per place. [2024-06-28 00:03:32,875 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 25 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2024-06-28 00:03:32,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 38 transitions, 144 flow [2024-06-28 00:03:32,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:03:32,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:03:32,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-28 00:03:32,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-06-28 00:03:32,886 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 79 transitions. [2024-06-28 00:03:32,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 38 transitions, 144 flow [2024-06-28 00:03:32,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 38 transitions, 140 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:32,890 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 87 flow [2024-06-28 00:03:32,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-28 00:03:32,894 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2024-06-28 00:03:32,894 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 87 flow [2024-06-28 00:03:32,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:32,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:32,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:32,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:03:32,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:32,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:32,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1437879967, now seen corresponding path program 1 times [2024-06-28 00:03:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:32,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345605125] [2024-06-28 00:03:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:32,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:33,608 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 00:03:33,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:33,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345605125] [2024-06-28 00:03:33,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345605125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:33,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:33,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:03:33,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527147225] [2024-06-28 00:03:33,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:33,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:03:33,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:33,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:03:33,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:03:33,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-06-28 00:03:33,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 00:03:33,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:33,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-06-28 00:03:33,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:33,761 INFO L124 PetriNetUnfolderBase]: 433/766 cut-off events. [2024-06-28 00:03:33,761 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2024-06-28 00:03:33,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1673 conditions, 766 events. 433/766 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4157 event pairs, 121 based on Foata normal form. 6/742 useless extension candidates. Maximal degree in co-relation 1661. Up to 615 conditions per place. [2024-06-28 00:03:33,767 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 30 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2024-06-28 00:03:33,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 193 flow [2024-06-28 00:03:33,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:03:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:03:33,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-06-28 00:03:33,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-06-28 00:03:33,769 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 87 flow. Second operand 4 states and 102 transitions. [2024-06-28 00:03:33,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 193 flow [2024-06-28 00:03:33,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:03:33,770 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 118 flow [2024-06-28 00:03:33,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-28 00:03:33,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-06-28 00:03:33,771 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 118 flow [2024-06-28 00:03:33,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 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 00:03:33,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:33,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:33,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:03:33,772 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:33,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1624605075, now seen corresponding path program 1 times [2024-06-28 00:03:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:33,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185612125] [2024-06-28 00:03:33,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:33,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:34,537 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 00:03:34,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:34,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185612125] [2024-06-28 00:03:34,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185612125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:34,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:34,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:03:34,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469735341] [2024-06-28 00:03:34,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:34,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:03:34,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:03:34,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:03:34,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-06-28 00:03:34,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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 00:03:34,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:34,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-06-28 00:03:34,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:34,855 INFO L124 PetriNetUnfolderBase]: 461/848 cut-off events. [2024-06-28 00:03:34,855 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2024-06-28 00:03:34,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 848 events. 461/848 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4757 event pairs, 52 based on Foata normal form. 18/833 useless extension candidates. Maximal degree in co-relation 2074. Up to 571 conditions per place. [2024-06-28 00:03:34,875 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 37 selfloop transitions, 8 changer transitions 0/55 dead transitions. [2024-06-28 00:03:34,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 55 transitions, 262 flow [2024-06-28 00:03:34,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:03:34,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:03:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-06-28 00:03:34,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-06-28 00:03:34,877 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 118 flow. Second operand 5 states and 127 transitions. [2024-06-28 00:03:34,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 55 transitions, 262 flow [2024-06-28 00:03:34,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 55 transitions, 252 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 00:03:34,879 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 145 flow [2024-06-28 00:03:34,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2024-06-28 00:03:34,880 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-28 00:03:34,880 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 145 flow [2024-06-28 00:03:34,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 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 00:03:34,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:34,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:34,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:03:34,881 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:34,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2122403572, now seen corresponding path program 1 times [2024-06-28 00:03:34,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:34,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775731386] [2024-06-28 00:03:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:34,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:35,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:03:35,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:35,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775731386] [2024-06-28 00:03:35,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775731386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:03:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488930587] [2024-06-28 00:03:35,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:35,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:03:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:03:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:03:35,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:03:35,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:03:35,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:35,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:03:35,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:36,395 INFO L124 PetriNetUnfolderBase]: 638/1148 cut-off events. [2024-06-28 00:03:36,408 INFO L125 PetriNetUnfolderBase]: For 871/874 co-relation queries the response was YES. [2024-06-28 00:03:36,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 1148 events. 638/1148 cut-off events. For 871/874 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6398 event pairs, 169 based on Foata normal form. 4/1109 useless extension candidates. Maximal degree in co-relation 3036. Up to 857 conditions per place. [2024-06-28 00:03:36,415 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 46 selfloop transitions, 14 changer transitions 0/68 dead transitions. [2024-06-28 00:03:36,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 380 flow [2024-06-28 00:03:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:03:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:03:36,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 00:03:36,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-06-28 00:03:36,430 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 145 flow. Second operand 7 states and 156 transitions. [2024-06-28 00:03:36,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 380 flow [2024-06-28 00:03:36,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 356 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:36,433 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 219 flow [2024-06-28 00:03:36,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=219, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-06-28 00:03:36,433 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-06-28 00:03:36,434 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 219 flow [2024-06-28 00:03:36,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 00:03:36,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:36,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:36,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:03:36,434 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:36,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash 676580532, now seen corresponding path program 2 times [2024-06-28 00:03:36,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:36,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597109809] [2024-06-28 00:03:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:36,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:37,224 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 00:03:37,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:37,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597109809] [2024-06-28 00:03:37,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597109809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:37,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:37,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:03:37,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708391374] [2024-06-28 00:03:37,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:37,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:03:37,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:37,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:03:37,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:03:37,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-28 00:03:37,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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 00:03:37,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:37,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-28 00:03:37,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:37,474 INFO L124 PetriNetUnfolderBase]: 630/1136 cut-off events. [2024-06-28 00:03:37,474 INFO L125 PetriNetUnfolderBase]: For 1358/1361 co-relation queries the response was YES. [2024-06-28 00:03:37,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3232 conditions, 1136 events. 630/1136 cut-off events. For 1358/1361 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6320 event pairs, 167 based on Foata normal form. 4/1099 useless extension candidates. Maximal degree in co-relation 3213. Up to 851 conditions per place. [2024-06-28 00:03:37,483 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 40 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-28 00:03:37,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 371 flow [2024-06-28 00:03:37,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:03:37,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:03:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-06-28 00:03:37,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615 [2024-06-28 00:03:37,486 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 219 flow. Second operand 5 states and 123 transitions. [2024-06-28 00:03:37,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 371 flow [2024-06-28 00:03:37,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 354 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 00:03:37,494 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 238 flow [2024-06-28 00:03:37,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-28 00:03:37,497 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-28 00:03:37,497 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 238 flow [2024-06-28 00:03:37,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 6 states have internal predecessors, (100), 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 00:03:37,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:37,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:37,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:03:37,502 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:37,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:37,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1707039555, now seen corresponding path program 1 times [2024-06-28 00:03:37,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:37,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621789889] [2024-06-28 00:03:37,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:37,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:37,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:37,713 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 00:03:37,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:37,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621789889] [2024-06-28 00:03:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621789889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:37,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:37,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:03:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062383652] [2024-06-28 00:03:37,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:37,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:03:37,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:37,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:03:37,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:03:37,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:03:37,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 00:03:37,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:37,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:03:37,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:38,011 INFO L124 PetriNetUnfolderBase]: 761/1336 cut-off events. [2024-06-28 00:03:38,011 INFO L125 PetriNetUnfolderBase]: For 1919/1919 co-relation queries the response was YES. [2024-06-28 00:03:38,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3943 conditions, 1336 events. 761/1336 cut-off events. For 1919/1919 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7356 event pairs, 337 based on Foata normal form. 3/1318 useless extension candidates. Maximal degree in co-relation 3922. Up to 1171 conditions per place. [2024-06-28 00:03:38,020 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 45 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2024-06-28 00:03:38,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 403 flow [2024-06-28 00:03:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:03:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:03:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-06-28 00:03:38,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 00:03:38,023 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 238 flow. Second operand 5 states and 100 transitions. [2024-06-28 00:03:38,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 403 flow [2024-06-28 00:03:38,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 61 transitions, 368 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:38,028 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 280 flow [2024-06-28 00:03:38,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-06-28 00:03:38,031 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2024-06-28 00:03:38,031 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 280 flow [2024-06-28 00:03:38,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 00:03:38,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:38,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:38,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:03:38,032 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:38,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash -576775336, now seen corresponding path program 1 times [2024-06-28 00:03:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:38,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770466464] [2024-06-28 00:03:38,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:38,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:39,162 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 00:03:39,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:39,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770466464] [2024-06-28 00:03:39,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770466464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:39,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:39,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:03:39,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169990638] [2024-06-28 00:03:39,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:39,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:03:39,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:39,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:03:39,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:03:39,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:03:39,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 280 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 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 00:03:39,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:39,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:03:39,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:39,635 INFO L124 PetriNetUnfolderBase]: 675/1222 cut-off events. [2024-06-28 00:03:39,646 INFO L125 PetriNetUnfolderBase]: For 1852/1852 co-relation queries the response was YES. [2024-06-28 00:03:39,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3653 conditions, 1222 events. 675/1222 cut-off events. For 1852/1852 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6864 event pairs, 118 based on Foata normal form. 4/1215 useless extension candidates. Maximal degree in co-relation 3628. Up to 879 conditions per place. [2024-06-28 00:03:39,653 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 63 selfloop transitions, 18 changer transitions 0/89 dead transitions. [2024-06-28 00:03:39,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 89 transitions, 582 flow [2024-06-28 00:03:39,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:39,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:39,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 00:03:39,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.559375 [2024-06-28 00:03:39,669 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 280 flow. Second operand 8 states and 179 transitions. [2024-06-28 00:03:39,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 89 transitions, 582 flow [2024-06-28 00:03:39,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 576 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-28 00:03:39,673 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 388 flow [2024-06-28 00:03:39,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=388, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-06-28 00:03:39,674 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-28 00:03:39,674 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 388 flow [2024-06-28 00:03:39,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 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 00:03:39,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:39,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:39,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:03:39,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:39,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:39,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1170700444, now seen corresponding path program 2 times [2024-06-28 00:03:39,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:39,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790774769] [2024-06-28 00:03:39,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:39,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:40,784 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 00:03:40,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:40,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790774769] [2024-06-28 00:03:40,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790774769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:40,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:40,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:03:40,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876160948] [2024-06-28 00:03:40,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:40,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:03:40,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:40,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:03:40,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:03:40,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-28 00:03:40,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 388 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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 00:03:40,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:40,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-28 00:03:40,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:41,161 INFO L124 PetriNetUnfolderBase]: 708/1291 cut-off events. [2024-06-28 00:03:41,161 INFO L125 PetriNetUnfolderBase]: For 3132/3132 co-relation queries the response was YES. [2024-06-28 00:03:41,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4231 conditions, 1291 events. 708/1291 cut-off events. For 3132/3132 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7503 event pairs, 151 based on Foata normal form. 16/1291 useless extension candidates. Maximal degree in co-relation 4201. Up to 879 conditions per place. [2024-06-28 00:03:41,170 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 57 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2024-06-28 00:03:41,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 85 transitions, 617 flow [2024-06-28 00:03:41,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:03:41,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:03:41,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-28 00:03:41,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-06-28 00:03:41,171 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 388 flow. Second operand 6 states and 146 transitions. [2024-06-28 00:03:41,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 85 transitions, 617 flow [2024-06-28 00:03:41,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 583 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:41,177 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 414 flow [2024-06-28 00:03:41,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=414, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-06-28 00:03:41,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-28 00:03:41,178 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 414 flow [2024-06-28 00:03:41,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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 00:03:41,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:41,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:41,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:03:41,179 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:41,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1377359464, now seen corresponding path program 3 times [2024-06-28 00:03:41,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:41,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344962446] [2024-06-28 00:03:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:41,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:42,238 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 00:03:42,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:42,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344962446] [2024-06-28 00:03:42,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344962446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:42,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:42,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:03:42,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275911572] [2024-06-28 00:03:42,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:42,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:03:42,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:42,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:03:42,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:03:42,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-28 00:03:42,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 414 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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 00:03:42,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:42,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-28 00:03:42,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:42,787 INFO L124 PetriNetUnfolderBase]: 813/1518 cut-off events. [2024-06-28 00:03:42,787 INFO L125 PetriNetUnfolderBase]: For 4171/4171 co-relation queries the response was YES. [2024-06-28 00:03:42,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5072 conditions, 1518 events. 813/1518 cut-off events. For 4171/4171 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9383 event pairs, 80 based on Foata normal form. 12/1520 useless extension candidates. Maximal degree in co-relation 5043. Up to 629 conditions per place. [2024-06-28 00:03:42,799 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 62 selfloop transitions, 27 changer transitions 0/98 dead transitions. [2024-06-28 00:03:42,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 98 transitions, 760 flow [2024-06-28 00:03:42,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:03:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:03:42,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-28 00:03:42,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-06-28 00:03:42,801 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 414 flow. Second operand 7 states and 172 transitions. [2024-06-28 00:03:42,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 98 transitions, 760 flow [2024-06-28 00:03:42,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 98 transitions, 716 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:42,809 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 504 flow [2024-06-28 00:03:42,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=504, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2024-06-28 00:03:42,811 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-28 00:03:42,811 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 504 flow [2024-06-28 00:03:42,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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 00:03:42,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:42,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:42,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:03:42,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:42,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:42,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1370007814, now seen corresponding path program 4 times [2024-06-28 00:03:42,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:42,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460234804] [2024-06-28 00:03:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:42,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:43,701 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 00:03:43,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:43,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460234804] [2024-06-28 00:03:43,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460234804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:43,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:43,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:03:43,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117754639] [2024-06-28 00:03:43,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:43,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:03:43,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:43,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:03:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:03:43,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 40 [2024-06-28 00:03:43,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 504 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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 00:03:43,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:43,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 40 [2024-06-28 00:03:43,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:44,200 INFO L124 PetriNetUnfolderBase]: 906/1731 cut-off events. [2024-06-28 00:03:44,200 INFO L125 PetriNetUnfolderBase]: For 6146/6146 co-relation queries the response was YES. [2024-06-28 00:03:44,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6140 conditions, 1731 events. 906/1731 cut-off events. For 6146/6146 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11388 event pairs, 185 based on Foata normal form. 12/1729 useless extension candidates. Maximal degree in co-relation 6108. Up to 1104 conditions per place. [2024-06-28 00:03:44,212 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 73 selfloop transitions, 22 changer transitions 0/104 dead transitions. [2024-06-28 00:03:44,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 104 transitions, 870 flow [2024-06-28 00:03:44,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:03:44,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:03:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-28 00:03:44,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178571428571429 [2024-06-28 00:03:44,213 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 504 flow. Second operand 7 states and 173 transitions. [2024-06-28 00:03:44,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 104 transitions, 870 flow [2024-06-28 00:03:44,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 104 transitions, 802 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:44,225 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 570 flow [2024-06-28 00:03:44,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=570, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2024-06-28 00:03:44,225 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-28 00:03:44,225 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 570 flow [2024-06-28 00:03:44,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 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 00:03:44,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:44,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:44,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:03:44,226 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:44,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:44,227 INFO L85 PathProgramCache]: Analyzing trace with hash 441692216, now seen corresponding path program 1 times [2024-06-28 00:03:44,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:44,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259902975] [2024-06-28 00:03:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:44,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:44,493 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 00:03:44,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:44,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259902975] [2024-06-28 00:03:44,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259902975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:44,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:44,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:03:44,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355371741] [2024-06-28 00:03:44,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:44,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:03:44,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:44,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:03:44,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:03:44,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:03:44,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 570 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 00:03:44,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:44,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:03:44,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:44,980 INFO L124 PetriNetUnfolderBase]: 1190/2193 cut-off events. [2024-06-28 00:03:44,981 INFO L125 PetriNetUnfolderBase]: For 7861/7861 co-relation queries the response was YES. [2024-06-28 00:03:44,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7661 conditions, 2193 events. 1190/2193 cut-off events. For 7861/7861 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14305 event pairs, 322 based on Foata normal form. 9/2148 useless extension candidates. Maximal degree in co-relation 7626. Up to 1782 conditions per place. [2024-06-28 00:03:45,000 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 77 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2024-06-28 00:03:45,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 96 transitions, 836 flow [2024-06-28 00:03:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:03:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:03:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 00:03:45,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 00:03:45,002 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 570 flow. Second operand 7 states and 135 transitions. [2024-06-28 00:03:45,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 96 transitions, 836 flow [2024-06-28 00:03:45,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 96 transitions, 794 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:45,020 INFO L231 Difference]: Finished difference. Result has 84 places, 76 transitions, 584 flow [2024-06-28 00:03:45,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=584, PETRI_PLACES=84, PETRI_TRANSITIONS=76} [2024-06-28 00:03:45,021 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 43 predicate places. [2024-06-28 00:03:45,021 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 76 transitions, 584 flow [2024-06-28 00:03:45,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 00:03:45,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:45,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:45,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:03:45,023 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:45,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash -212464798, now seen corresponding path program 2 times [2024-06-28 00:03:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644733678] [2024-06-28 00:03:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:45,295 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 00:03:45,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:45,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644733678] [2024-06-28 00:03:45,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644733678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:45,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:45,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:03:45,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291384320] [2024-06-28 00:03:45,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:45,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:03:45,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:45,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:03:45,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:03:45,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:03:45,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 76 transitions, 584 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 00:03:45,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:45,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:03:45,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:45,671 INFO L124 PetriNetUnfolderBase]: 1223/2247 cut-off events. [2024-06-28 00:03:45,672 INFO L125 PetriNetUnfolderBase]: For 8371/8371 co-relation queries the response was YES. [2024-06-28 00:03:45,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7850 conditions, 2247 events. 1223/2247 cut-off events. For 8371/8371 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 14748 event pairs, 319 based on Foata normal form. 9/2207 useless extension candidates. Maximal degree in co-relation 7812. Up to 1725 conditions per place. [2024-06-28 00:03:45,686 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 74 selfloop transitions, 15 changer transitions 0/96 dead transitions. [2024-06-28 00:03:45,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 96 transitions, 846 flow [2024-06-28 00:03:45,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:03:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:03:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 00:03:45,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-28 00:03:45,688 INFO L175 Difference]: Start difference. First operand has 84 places, 76 transitions, 584 flow. Second operand 6 states and 121 transitions. [2024-06-28 00:03:45,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 96 transitions, 846 flow [2024-06-28 00:03:45,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 96 transitions, 830 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:45,701 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 612 flow [2024-06-28 00:03:45,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=612, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2024-06-28 00:03:45,701 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-28 00:03:45,701 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 612 flow [2024-06-28 00:03:45,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 00:03:45,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:45,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:45,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:03:45,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:45,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:45,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1239495898, now seen corresponding path program 3 times [2024-06-28 00:03:45,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:45,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438788300] [2024-06-28 00:03:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:45,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:45,951 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 00:03:45,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:45,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438788300] [2024-06-28 00:03:45,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438788300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:45,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:45,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:03:45,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693619269] [2024-06-28 00:03:45,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:45,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:03:45,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:45,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:03:45,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:03:45,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:03:45,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 612 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 00:03:45,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:45,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:03:45,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:46,302 INFO L124 PetriNetUnfolderBase]: 1202/2217 cut-off events. [2024-06-28 00:03:46,303 INFO L125 PetriNetUnfolderBase]: For 9164/9164 co-relation queries the response was YES. [2024-06-28 00:03:46,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7781 conditions, 2217 events. 1202/2217 cut-off events. For 9164/9164 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14550 event pairs, 313 based on Foata normal form. 9/2177 useless extension candidates. Maximal degree in co-relation 7741. Up to 1755 conditions per place. [2024-06-28 00:03:46,316 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 69 selfloop transitions, 14 changer transitions 0/90 dead transitions. [2024-06-28 00:03:46,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 90 transitions, 818 flow [2024-06-28 00:03:46,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:03:46,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:03:46,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 00:03:46,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 00:03:46,318 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 612 flow. Second operand 6 states and 115 transitions. [2024-06-28 00:03:46,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 90 transitions, 818 flow [2024-06-28 00:03:46,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 793 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:46,332 INFO L231 Difference]: Finished difference. Result has 90 places, 77 transitions, 624 flow [2024-06-28 00:03:46,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=624, PETRI_PLACES=90, PETRI_TRANSITIONS=77} [2024-06-28 00:03:46,332 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2024-06-28 00:03:46,332 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 77 transitions, 624 flow [2024-06-28 00:03:46,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 00:03:46,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:46,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:46,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:03:46,333 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:46,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:46,333 INFO L85 PathProgramCache]: Analyzing trace with hash 503429302, now seen corresponding path program 1 times [2024-06-28 00:03:46,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:46,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902491294] [2024-06-28 00:03:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:46,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:46,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:46,579 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 00:03:46,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:46,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902491294] [2024-06-28 00:03:46,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902491294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:46,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:46,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:03:46,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105651325] [2024-06-28 00:03:46,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:46,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:03:46,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:46,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:03:46,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:03:46,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:03:46,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 77 transitions, 624 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:46,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:46,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:03:46,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:46,922 INFO L124 PetriNetUnfolderBase]: 1207/2225 cut-off events. [2024-06-28 00:03:46,923 INFO L125 PetriNetUnfolderBase]: For 9534/9534 co-relation queries the response was YES. [2024-06-28 00:03:46,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7887 conditions, 2225 events. 1207/2225 cut-off events. For 9534/9534 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14674 event pairs, 463 based on Foata normal form. 1/2179 useless extension candidates. Maximal degree in co-relation 7846. Up to 1902 conditions per place. [2024-06-28 00:03:46,936 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 74 selfloop transitions, 16 changer transitions 0/98 dead transitions. [2024-06-28 00:03:46,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 98 transitions, 912 flow [2024-06-28 00:03:46,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:03:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:03:46,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-28 00:03:46,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.585 [2024-06-28 00:03:46,938 INFO L175 Difference]: Start difference. First operand has 90 places, 77 transitions, 624 flow. Second operand 5 states and 117 transitions. [2024-06-28 00:03:46,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 98 transitions, 912 flow [2024-06-28 00:03:46,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 98 transitions, 876 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:03:46,952 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 699 flow [2024-06-28 00:03:46,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=699, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2024-06-28 00:03:46,953 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-28 00:03:46,953 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 699 flow [2024-06-28 00:03:46,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:46,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:46,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:46,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:03:46,953 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:46,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:46,954 INFO L85 PathProgramCache]: Analyzing trace with hash 846611204, now seen corresponding path program 2 times [2024-06-28 00:03:46,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:46,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852637408] [2024-06-28 00:03:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:46,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:47,150 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 00:03:47,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:47,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852637408] [2024-06-28 00:03:47,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852637408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:47,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:47,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:03:47,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109217778] [2024-06-28 00:03:47,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:47,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:03:47,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:47,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:03:47,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:03:47,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:03:47,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 699 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:47,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:47,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:03:47,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:47,413 INFO L124 PetriNetUnfolderBase]: 1204/2221 cut-off events. [2024-06-28 00:03:47,413 INFO L125 PetriNetUnfolderBase]: For 9333/9333 co-relation queries the response was YES. [2024-06-28 00:03:47,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7988 conditions, 2221 events. 1204/2221 cut-off events. For 9333/9333 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14658 event pairs, 462 based on Foata normal form. 1/2175 useless extension candidates. Maximal degree in co-relation 7946. Up to 1911 conditions per place. [2024-06-28 00:03:47,427 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 75 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2024-06-28 00:03:47,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 94 transitions, 891 flow [2024-06-28 00:03:47,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:03:47,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:03:47,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-28 00:03:47,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-06-28 00:03:47,428 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 699 flow. Second operand 5 states and 111 transitions. [2024-06-28 00:03:47,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 94 transitions, 891 flow [2024-06-28 00:03:47,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 94 transitions, 867 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-28 00:03:47,444 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 703 flow [2024-06-28 00:03:47,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=703, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-06-28 00:03:47,445 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2024-06-28 00:03:47,445 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 703 flow [2024-06-28 00:03:47,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:03:47,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:47,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:47,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:03:47,446 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:47,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:47,446 INFO L85 PathProgramCache]: Analyzing trace with hash -387523177, now seen corresponding path program 1 times [2024-06-28 00:03:47,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:47,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468370413] [2024-06-28 00:03:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:47,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:48,975 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 00:03:48,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:48,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468370413] [2024-06-28 00:03:48,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468370413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:48,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:48,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:48,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730945601] [2024-06-28 00:03:48,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:48,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:49,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:03:49,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 703 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 00:03:49,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:49,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:03:49,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:49,689 INFO L124 PetriNetUnfolderBase]: 1351/2519 cut-off events. [2024-06-28 00:03:49,689 INFO L125 PetriNetUnfolderBase]: For 12751/12751 co-relation queries the response was YES. [2024-06-28 00:03:49,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8949 conditions, 2519 events. 1351/2519 cut-off events. For 12751/12751 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 17487 event pairs, 87 based on Foata normal form. 32/2535 useless extension candidates. Maximal degree in co-relation 8905. Up to 927 conditions per place. [2024-06-28 00:03:49,703 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 81 selfloop transitions, 54 changer transitions 0/143 dead transitions. [2024-06-28 00:03:49,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 143 transitions, 1287 flow [2024-06-28 00:03:49,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:03:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:03:49,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 00:03:49,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.584375 [2024-06-28 00:03:49,704 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 703 flow. Second operand 8 states and 187 transitions. [2024-06-28 00:03:49,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 143 transitions, 1287 flow [2024-06-28 00:03:49,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 143 transitions, 1260 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:49,723 INFO L231 Difference]: Finished difference. Result has 103 places, 109 transitions, 1052 flow [2024-06-28 00:03:49,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1052, PETRI_PLACES=103, PETRI_TRANSITIONS=109} [2024-06-28 00:03:49,724 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-28 00:03:49,724 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 109 transitions, 1052 flow [2024-06-28 00:03:49,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 00:03:49,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:49,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:49,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:03:49,725 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:49,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:49,725 INFO L85 PathProgramCache]: Analyzing trace with hash -974184233, now seen corresponding path program 2 times [2024-06-28 00:03:49,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:49,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919925096] [2024-06-28 00:03:49,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:49,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:52,468 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 00:03:52,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:52,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919925096] [2024-06-28 00:03:52,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919925096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:52,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:52,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:52,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48310757] [2024-06-28 00:03:52,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:52,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:52,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:52,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:52,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:52,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:03:52,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 109 transitions, 1052 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 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 00:03:52,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:52,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:03:52,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:53,307 INFO L124 PetriNetUnfolderBase]: 1339/2507 cut-off events. [2024-06-28 00:03:53,307 INFO L125 PetriNetUnfolderBase]: For 14630/14630 co-relation queries the response was YES. [2024-06-28 00:03:53,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9825 conditions, 2507 events. 1339/2507 cut-off events. For 14630/14630 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 17331 event pairs, 245 based on Foata normal form. 8/2485 useless extension candidates. Maximal degree in co-relation 9777. Up to 1600 conditions per place. [2024-06-28 00:03:53,332 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 113 selfloop transitions, 32 changer transitions 0/152 dead transitions. [2024-06-28 00:03:53,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 152 transitions, 1467 flow [2024-06-28 00:03:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-28 00:03:53,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535 [2024-06-28 00:03:53,335 INFO L175 Difference]: Start difference. First operand has 103 places, 109 transitions, 1052 flow. Second operand 10 states and 214 transitions. [2024-06-28 00:03:53,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 152 transitions, 1467 flow [2024-06-28 00:03:53,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 152 transitions, 1370 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 00:03:53,364 INFO L231 Difference]: Finished difference. Result has 112 places, 111 transitions, 1069 flow [2024-06-28 00:03:53,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1069, PETRI_PLACES=112, PETRI_TRANSITIONS=111} [2024-06-28 00:03:53,365 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-28 00:03:53,365 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 111 transitions, 1069 flow [2024-06-28 00:03:53,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 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 00:03:53,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:53,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:53,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:03:53,365 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:53,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:53,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1977419451, now seen corresponding path program 3 times [2024-06-28 00:03:53,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:53,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369805249] [2024-06-28 00:03:53,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:53,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:54,765 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 00:03:54,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:54,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369805249] [2024-06-28 00:03:54,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369805249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:54,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:54,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:03:54,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694823366] [2024-06-28 00:03:54,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:54,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:03:54,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:54,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:03:54,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:03:54,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:03:54,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 111 transitions, 1069 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 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 00:03:54,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:54,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:03:54,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:55,577 INFO L124 PetriNetUnfolderBase]: 1327/2482 cut-off events. [2024-06-28 00:03:55,577 INFO L125 PetriNetUnfolderBase]: For 15202/15202 co-relation queries the response was YES. [2024-06-28 00:03:55,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9706 conditions, 2482 events. 1327/2482 cut-off events. For 15202/15202 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 17129 event pairs, 250 based on Foata normal form. 8/2454 useless extension candidates. Maximal degree in co-relation 9654. Up to 1636 conditions per place. [2024-06-28 00:03:55,593 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 113 selfloop transitions, 33 changer transitions 0/153 dead transitions. [2024-06-28 00:03:55,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 153 transitions, 1481 flow [2024-06-28 00:03:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:03:55,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:03:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-28 00:03:55,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.535 [2024-06-28 00:03:55,595 INFO L175 Difference]: Start difference. First operand has 112 places, 111 transitions, 1069 flow. Second operand 10 states and 214 transitions. [2024-06-28 00:03:55,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 153 transitions, 1481 flow [2024-06-28 00:03:55,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 153 transitions, 1383 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:55,625 INFO L231 Difference]: Finished difference. Result has 116 places, 112 transitions, 1059 flow [2024-06-28 00:03:55,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=971, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1059, PETRI_PLACES=116, PETRI_TRANSITIONS=112} [2024-06-28 00:03:55,625 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 75 predicate places. [2024-06-28 00:03:55,625 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 112 transitions, 1059 flow [2024-06-28 00:03:55,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 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 00:03:55,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:55,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:55,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:03:55,626 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:55,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:55,627 INFO L85 PathProgramCache]: Analyzing trace with hash 792548903, now seen corresponding path program 4 times [2024-06-28 00:03:55,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:55,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081956324] [2024-06-28 00:03:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:55,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:57,038 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 00:03:57,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:57,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081956324] [2024-06-28 00:03:57,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081956324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:57,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:57,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:03:57,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176022329] [2024-06-28 00:03:57,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:57,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:03:57,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:57,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:03:57,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:03:57,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:03:57,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 112 transitions, 1059 flow. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 00:03:57,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:57,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:03:57,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:57,811 INFO L124 PetriNetUnfolderBase]: 1315/2456 cut-off events. [2024-06-28 00:03:57,812 INFO L125 PetriNetUnfolderBase]: For 15227/15227 co-relation queries the response was YES. [2024-06-28 00:03:57,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9474 conditions, 2456 events. 1315/2456 cut-off events. For 15227/15227 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 16882 event pairs, 157 based on Foata normal form. 8/2423 useless extension candidates. Maximal degree in co-relation 9423. Up to 915 conditions per place. [2024-06-28 00:03:57,829 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 91 selfloop transitions, 52 changer transitions 0/151 dead transitions. [2024-06-28 00:03:57,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 151 transitions, 1443 flow [2024-06-28 00:03:57,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:03:57,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:03:57,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 206 transitions. [2024-06-28 00:03:57,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5722222222222222 [2024-06-28 00:03:57,831 INFO L175 Difference]: Start difference. First operand has 116 places, 112 transitions, 1059 flow. Second operand 9 states and 206 transitions. [2024-06-28 00:03:57,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 151 transitions, 1443 flow [2024-06-28 00:03:57,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 151 transitions, 1363 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 00:03:57,863 INFO L231 Difference]: Finished difference. Result has 118 places, 112 transitions, 1079 flow [2024-06-28 00:03:57,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1079, PETRI_PLACES=118, PETRI_TRANSITIONS=112} [2024-06-28 00:03:57,864 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-06-28 00:03:57,864 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 112 transitions, 1079 flow [2024-06-28 00:03:57,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 9 states have internal predecessors, (139), 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 00:03:57,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:57,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:57,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:03:57,864 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:57,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:57,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1573709370, now seen corresponding path program 1 times [2024-06-28 00:03:57,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:57,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135101837] [2024-06-28 00:03:57,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:57,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:58,354 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 00:03:58,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:58,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135101837] [2024-06-28 00:03:58,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135101837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:58,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:58,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:03:58,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331964929] [2024-06-28 00:03:58,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:58,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:03:58,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:58,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:03:58,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:03:58,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:03:58,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 112 transitions, 1079 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:03:58,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:58,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:03:58,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:58,704 INFO L124 PetriNetUnfolderBase]: 1341/2508 cut-off events. [2024-06-28 00:03:58,704 INFO L125 PetriNetUnfolderBase]: For 16816/16816 co-relation queries the response was YES. [2024-06-28 00:03:58,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9889 conditions, 2508 events. 1341/2508 cut-off events. For 16816/16816 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 17370 event pairs, 428 based on Foata normal form. 3/2459 useless extension candidates. Maximal degree in co-relation 9837. Up to 2100 conditions per place. [2024-06-28 00:03:58,721 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 108 selfloop transitions, 22 changer transitions 0/138 dead transitions. [2024-06-28 00:03:58,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 138 transitions, 1474 flow [2024-06-28 00:03:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:03:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:03:58,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 00:03:58,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 00:03:58,725 INFO L175 Difference]: Start difference. First operand has 118 places, 112 transitions, 1079 flow. Second operand 6 states and 140 transitions. [2024-06-28 00:03:58,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 138 transitions, 1474 flow [2024-06-28 00:03:58,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 138 transitions, 1375 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:03:58,763 INFO L231 Difference]: Finished difference. Result has 121 places, 118 transitions, 1092 flow [2024-06-28 00:03:58,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1092, PETRI_PLACES=121, PETRI_TRANSITIONS=118} [2024-06-28 00:03:58,764 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 80 predicate places. [2024-06-28 00:03:58,764 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 118 transitions, 1092 flow [2024-06-28 00:03:58,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:03:58,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:58,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:58,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:03:58,764 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:58,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:58,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1573559423, now seen corresponding path program 1 times [2024-06-28 00:03:58,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:58,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276152137] [2024-06-28 00:03:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:58,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:03:59,102 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 00:03:59,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:03:59,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276152137] [2024-06-28 00:03:59,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276152137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:03:59,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:03:59,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:03:59,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915298456] [2024-06-28 00:03:59,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:03:59,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:03:59,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:03:59,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:03:59,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:03:59,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:03:59,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 118 transitions, 1092 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:03:59,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:03:59,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:03:59,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:03:59,424 INFO L124 PetriNetUnfolderBase]: 1362/2541 cut-off events. [2024-06-28 00:03:59,425 INFO L125 PetriNetUnfolderBase]: For 17765/17765 co-relation queries the response was YES. [2024-06-28 00:03:59,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10045 conditions, 2541 events. 1362/2541 cut-off events. For 17765/17765 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 17499 event pairs, 417 based on Foata normal form. 2/2491 useless extension candidates. Maximal degree in co-relation 9991. Up to 2150 conditions per place. [2024-06-28 00:03:59,442 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 110 selfloop transitions, 18 changer transitions 0/136 dead transitions. [2024-06-28 00:03:59,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 136 transitions, 1460 flow [2024-06-28 00:03:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:03:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:03:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-28 00:03:59,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59 [2024-06-28 00:03:59,443 INFO L175 Difference]: Start difference. First operand has 121 places, 118 transitions, 1092 flow. Second operand 5 states and 118 transitions. [2024-06-28 00:03:59,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 136 transitions, 1460 flow [2024-06-28 00:03:59,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 136 transitions, 1421 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 00:03:59,478 INFO L231 Difference]: Finished difference. Result has 124 places, 122 transitions, 1140 flow [2024-06-28 00:03:59,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1053, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1140, PETRI_PLACES=124, PETRI_TRANSITIONS=122} [2024-06-28 00:03:59,479 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-28 00:03:59,479 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 122 transitions, 1140 flow [2024-06-28 00:03:59,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:03:59,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:03:59,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:03:59,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:03:59,479 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:03:59,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:03:59,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1797058108, now seen corresponding path program 2 times [2024-06-28 00:03:59,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:03:59,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122449731] [2024-06-28 00:03:59,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:03:59,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:03:59,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:00,010 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 00:04:00,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:00,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122449731] [2024-06-28 00:04:00,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122449731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:00,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:00,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:00,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876451379] [2024-06-28 00:04:00,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:00,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:00,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:00,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:00,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:00,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:00,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 122 transitions, 1140 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:00,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:00,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:00,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:00,395 INFO L124 PetriNetUnfolderBase]: 1375/2562 cut-off events. [2024-06-28 00:04:00,396 INFO L125 PetriNetUnfolderBase]: For 19382/19382 co-relation queries the response was YES. [2024-06-28 00:04:00,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10269 conditions, 2562 events. 1375/2562 cut-off events. For 19382/19382 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 17666 event pairs, 429 based on Foata normal form. 3/2513 useless extension candidates. Maximal degree in co-relation 10213. Up to 2175 conditions per place. [2024-06-28 00:04:00,415 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 112 selfloop transitions, 18 changer transitions 0/138 dead transitions. [2024-06-28 00:04:00,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 138 transitions, 1452 flow [2024-06-28 00:04:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 00:04:00,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-28 00:04:00,417 INFO L175 Difference]: Start difference. First operand has 124 places, 122 transitions, 1140 flow. Second operand 6 states and 134 transitions. [2024-06-28 00:04:00,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 138 transitions, 1452 flow [2024-06-28 00:04:00,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 138 transitions, 1423 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 00:04:00,459 INFO L231 Difference]: Finished difference. Result has 128 places, 124 transitions, 1172 flow [2024-06-28 00:04:00,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1172, PETRI_PLACES=128, PETRI_TRANSITIONS=124} [2024-06-28 00:04:00,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 87 predicate places. [2024-06-28 00:04:00,460 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 124 transitions, 1172 flow [2024-06-28 00:04:00,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:00,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:00,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:00,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:04:00,461 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:00,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:00,461 INFO L85 PathProgramCache]: Analyzing trace with hash 475411857, now seen corresponding path program 2 times [2024-06-28 00:04:00,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:00,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139568815] [2024-06-28 00:04:00,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:00,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:00,878 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 00:04:00,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:00,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139568815] [2024-06-28 00:04:00,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139568815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:00,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:00,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:00,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878452858] [2024-06-28 00:04:00,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:00,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:00,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:00,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:00,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:00,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:04:00,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 124 transitions, 1172 flow. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:00,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:00,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:04:00,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:01,314 INFO L124 PetriNetUnfolderBase]: 1370/2557 cut-off events. [2024-06-28 00:04:01,314 INFO L125 PetriNetUnfolderBase]: For 18614/18614 co-relation queries the response was YES. [2024-06-28 00:04:01,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10240 conditions, 2557 events. 1370/2557 cut-off events. For 18614/18614 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 17606 event pairs, 417 based on Foata normal form. 2/2509 useless extension candidates. Maximal degree in co-relation 10182. Up to 2175 conditions per place. [2024-06-28 00:04:01,331 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 113 selfloop transitions, 16 changer transitions 0/136 dead transitions. [2024-06-28 00:04:01,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 136 transitions, 1478 flow [2024-06-28 00:04:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:01,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:01,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 00:04:01,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-28 00:04:01,333 INFO L175 Difference]: Start difference. First operand has 128 places, 124 transitions, 1172 flow. Second operand 6 states and 116 transitions. [2024-06-28 00:04:01,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 136 transitions, 1478 flow [2024-06-28 00:04:01,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 136 transitions, 1441 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:01,367 INFO L231 Difference]: Finished difference. Result has 130 places, 126 transitions, 1204 flow [2024-06-28 00:04:01,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1204, PETRI_PLACES=130, PETRI_TRANSITIONS=126} [2024-06-28 00:04:01,368 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-06-28 00:04:01,368 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 126 transitions, 1204 flow [2024-06-28 00:04:01,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:04:01,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:01,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:01,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:04:01,369 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:01,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:01,369 INFO L85 PathProgramCache]: Analyzing trace with hash -577669210, now seen corresponding path program 3 times [2024-06-28 00:04:01,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:01,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322978542] [2024-06-28 00:04:01,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:01,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:01,798 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 00:04:01,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:01,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322978542] [2024-06-28 00:04:01,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322978542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:01,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:01,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558962399] [2024-06-28 00:04:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:01,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:01,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:01,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:01,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:01,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:01,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 126 transitions, 1204 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:01,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:01,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:01,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:02,202 INFO L124 PetriNetUnfolderBase]: 1362/2544 cut-off events. [2024-06-28 00:04:02,203 INFO L125 PetriNetUnfolderBase]: For 19725/19725 co-relation queries the response was YES. [2024-06-28 00:04:02,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10238 conditions, 2544 events. 1362/2544 cut-off events. For 19725/19725 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 17577 event pairs, 425 based on Foata normal form. 3/2495 useless extension candidates. Maximal degree in co-relation 10179. Up to 2169 conditions per place. [2024-06-28 00:04:02,223 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 116 selfloop transitions, 13 changer transitions 0/137 dead transitions. [2024-06-28 00:04:02,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 137 transitions, 1490 flow [2024-06-28 00:04:02,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:02,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2024-06-28 00:04:02,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-28 00:04:02,224 INFO L175 Difference]: Start difference. First operand has 130 places, 126 transitions, 1204 flow. Second operand 6 states and 129 transitions. [2024-06-28 00:04:02,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 137 transitions, 1490 flow [2024-06-28 00:04:02,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 137 transitions, 1447 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:02,297 INFO L231 Difference]: Finished difference. Result has 131 places, 126 transitions, 1192 flow [2024-06-28 00:04:02,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1192, PETRI_PLACES=131, PETRI_TRANSITIONS=126} [2024-06-28 00:04:02,303 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-06-28 00:04:02,304 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 126 transitions, 1192 flow [2024-06-28 00:04:02,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:02,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:02,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:04:02,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:04:02,304 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:02,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:02,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1567995233, now seen corresponding path program 3 times [2024-06-28 00:04:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:02,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747315074] [2024-06-28 00:04:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:02,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:02,939 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 00:04:02,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:02,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747315074] [2024-06-28 00:04:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747315074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:02,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:02,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:02,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609285274] [2024-06-28 00:04:02,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:02,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:02,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:02,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:02,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:02,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 126 transitions, 1192 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:02,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:02,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:02,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:03,264 INFO L124 PetriNetUnfolderBase]: 1357/2537 cut-off events. [2024-06-28 00:04:03,264 INFO L125 PetriNetUnfolderBase]: For 19001/19001 co-relation queries the response was YES. [2024-06-28 00:04:03,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10153 conditions, 2537 events. 1357/2537 cut-off events. For 19001/19001 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 17497 event pairs, 424 based on Foata normal form. 2/2487 useless extension candidates. Maximal degree in co-relation 10096. Up to 2165 conditions per place. [2024-06-28 00:04:03,281 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 115 selfloop transitions, 12 changer transitions 0/135 dead transitions. [2024-06-28 00:04:03,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 135 transitions, 1468 flow [2024-06-28 00:04:03,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:04:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:04:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-28 00:04:03,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555 [2024-06-28 00:04:03,283 INFO L175 Difference]: Start difference. First operand has 131 places, 126 transitions, 1192 flow. Second operand 5 states and 111 transitions. [2024-06-28 00:04:03,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 135 transitions, 1468 flow [2024-06-28 00:04:03,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 135 transitions, 1437 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:03,312 INFO L231 Difference]: Finished difference. Result has 132 places, 126 transitions, 1192 flow [2024-06-28 00:04:03,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1192, PETRI_PLACES=132, PETRI_TRANSITIONS=126} [2024-06-28 00:04:03,313 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-28 00:04:03,313 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 126 transitions, 1192 flow [2024-06-28 00:04:03,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:03,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:03,313 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 00:04:03,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:04:03,314 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:03,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1750763171, now seen corresponding path program 1 times [2024-06-28 00:04:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:03,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271044057] [2024-06-28 00:04:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:03,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:03,554 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 00:04:03,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:03,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271044057] [2024-06-28 00:04:03,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271044057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:03,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:03,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:03,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043365187] [2024-06-28 00:04:03,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:03,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:03,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:03,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:03,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:03,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:03,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 126 transitions, 1192 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:03,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:03,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:03,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:03,923 INFO L124 PetriNetUnfolderBase]: 1370/2567 cut-off events. [2024-06-28 00:04:03,923 INFO L125 PetriNetUnfolderBase]: For 20262/20268 co-relation queries the response was YES. [2024-06-28 00:04:03,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10304 conditions, 2567 events. 1370/2567 cut-off events. For 20262/20268 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 17719 event pairs, 349 based on Foata normal form. 1/2516 useless extension candidates. Maximal degree in co-relation 10246. Up to 2128 conditions per place. [2024-06-28 00:04:03,944 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 116 selfloop transitions, 33 changer transitions 0/157 dead transitions. [2024-06-28 00:04:03,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 157 transitions, 1712 flow [2024-06-28 00:04:03,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:03,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 00:04:03,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2024-06-28 00:04:03,945 INFO L175 Difference]: Start difference. First operand has 132 places, 126 transitions, 1192 flow. Second operand 6 states and 137 transitions. [2024-06-28 00:04:03,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 157 transitions, 1712 flow [2024-06-28 00:04:03,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 157 transitions, 1678 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:03,981 INFO L231 Difference]: Finished difference. Result has 137 places, 143 transitions, 1433 flow [2024-06-28 00:04:03,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1433, PETRI_PLACES=137, PETRI_TRANSITIONS=143} [2024-06-28 00:04:03,981 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-28 00:04:03,982 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 143 transitions, 1433 flow [2024-06-28 00:04:03,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:03,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:03,982 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 00:04:03,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:04:03,982 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:03,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash -957446685, now seen corresponding path program 2 times [2024-06-28 00:04:03,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:03,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128212027] [2024-06-28 00:04:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:03,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:04,382 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 00:04:04,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:04,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128212027] [2024-06-28 00:04:04,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128212027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:04,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:04,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:04,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464393728] [2024-06-28 00:04:04,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:04,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:04,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:04,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:04,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:04,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:04,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 143 transitions, 1433 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:04,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:04,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:04,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:04,856 INFO L124 PetriNetUnfolderBase]: 1375/2560 cut-off events. [2024-06-28 00:04:04,857 INFO L125 PetriNetUnfolderBase]: For 22599/22599 co-relation queries the response was YES. [2024-06-28 00:04:04,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10753 conditions, 2560 events. 1375/2560 cut-off events. For 22599/22599 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 17642 event pairs, 291 based on Foata normal form. 3/2507 useless extension candidates. Maximal degree in co-relation 10691. Up to 2082 conditions per place. [2024-06-28 00:04:04,875 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 121 selfloop transitions, 28 changer transitions 0/157 dead transitions. [2024-06-28 00:04:04,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 157 transitions, 1795 flow [2024-06-28 00:04:04,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:04:04,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:04:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-28 00:04:04,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565 [2024-06-28 00:04:04,876 INFO L175 Difference]: Start difference. First operand has 137 places, 143 transitions, 1433 flow. Second operand 5 states and 113 transitions. [2024-06-28 00:04:04,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 157 transitions, 1795 flow [2024-06-28 00:04:04,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 157 transitions, 1769 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-06-28 00:04:04,917 INFO L231 Difference]: Finished difference. Result has 142 places, 148 transitions, 1544 flow [2024-06-28 00:04:04,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1544, PETRI_PLACES=142, PETRI_TRANSITIONS=148} [2024-06-28 00:04:04,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-28 00:04:04,918 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 148 transitions, 1544 flow [2024-06-28 00:04:04,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:04,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:04,918 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 00:04:04,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:04:04,919 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:04,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:04,919 INFO L85 PathProgramCache]: Analyzing trace with hash 266937389, now seen corresponding path program 3 times [2024-06-28 00:04:04,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:04,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825838390] [2024-06-28 00:04:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:04,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:05,190 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 00:04:05,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:05,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825838390] [2024-06-28 00:04:05,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825838390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:05,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:05,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:05,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448818361] [2024-06-28 00:04:05,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:05,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:05,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:05,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:05,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:05,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:05,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 148 transitions, 1544 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:05,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:05,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:05,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:05,578 INFO L124 PetriNetUnfolderBase]: 1380/2581 cut-off events. [2024-06-28 00:04:05,578 INFO L125 PetriNetUnfolderBase]: For 24077/24086 co-relation queries the response was YES. [2024-06-28 00:04:05,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11067 conditions, 2581 events. 1380/2581 cut-off events. For 24077/24086 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 17847 event pairs, 351 based on Foata normal form. 7/2537 useless extension candidates. Maximal degree in co-relation 11002. Up to 2155 conditions per place. [2024-06-28 00:04:05,599 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 139 selfloop transitions, 20 changer transitions 0/167 dead transitions. [2024-06-28 00:04:05,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 167 transitions, 1937 flow [2024-06-28 00:04:05,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:05,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 00:04:05,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-28 00:04:05,600 INFO L175 Difference]: Start difference. First operand has 142 places, 148 transitions, 1544 flow. Second operand 6 states and 136 transitions. [2024-06-28 00:04:05,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 167 transitions, 1937 flow [2024-06-28 00:04:05,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 167 transitions, 1912 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 00:04:05,654 INFO L231 Difference]: Finished difference. Result has 147 places, 151 transitions, 1603 flow [2024-06-28 00:04:05,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1603, PETRI_PLACES=147, PETRI_TRANSITIONS=151} [2024-06-28 00:04:05,655 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 106 predicate places. [2024-06-28 00:04:05,655 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 151 transitions, 1603 flow [2024-06-28 00:04:05,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:05,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:05,656 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 00:04:05,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:04:05,656 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:05,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:05,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1535715307, now seen corresponding path program 4 times [2024-06-28 00:04:05,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:05,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966216146] [2024-06-28 00:04:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:05,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:05,948 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 00:04:05,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:05,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966216146] [2024-06-28 00:04:05,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966216146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:05,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:05,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:05,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90187493] [2024-06-28 00:04:05,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:05,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:05,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:05,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:05,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:05,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:05,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 151 transitions, 1603 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:05,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:05,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:05,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:06,314 INFO L124 PetriNetUnfolderBase]: 1385/2588 cut-off events. [2024-06-28 00:04:06,314 INFO L125 PetriNetUnfolderBase]: For 25228/25237 co-relation queries the response was YES. [2024-06-28 00:04:06,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11368 conditions, 2588 events. 1385/2588 cut-off events. For 25228/25237 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 17918 event pairs, 355 based on Foata normal form. 7/2544 useless extension candidates. Maximal degree in co-relation 11301. Up to 2127 conditions per place. [2024-06-28 00:04:06,334 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 124 selfloop transitions, 42 changer transitions 0/174 dead transitions. [2024-06-28 00:04:06,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 174 transitions, 2126 flow [2024-06-28 00:04:06,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:06,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-28 00:04:06,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5708333333333333 [2024-06-28 00:04:06,336 INFO L175 Difference]: Start difference. First operand has 147 places, 151 transitions, 1603 flow. Second operand 6 states and 137 transitions. [2024-06-28 00:04:06,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 174 transitions, 2126 flow [2024-06-28 00:04:06,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 174 transitions, 2059 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:06,394 INFO L231 Difference]: Finished difference. Result has 150 places, 160 transitions, 1752 flow [2024-06-28 00:04:06,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1752, PETRI_PLACES=150, PETRI_TRANSITIONS=160} [2024-06-28 00:04:06,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2024-06-28 00:04:06,396 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 160 transitions, 1752 flow [2024-06-28 00:04:06,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:06,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:06,396 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 00:04:06,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:04:06,396 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:06,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:06,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1844578019, now seen corresponding path program 5 times [2024-06-28 00:04:06,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:06,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262471765] [2024-06-28 00:04:06,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:06,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:06,703 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 00:04:06,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:06,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262471765] [2024-06-28 00:04:06,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262471765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:06,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:06,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:06,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212811746] [2024-06-28 00:04:06,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:06,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:06,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:06,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:06,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:06,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:06,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 160 transitions, 1752 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:06,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:06,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:06,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:07,077 INFO L124 PetriNetUnfolderBase]: 1403/2600 cut-off events. [2024-06-28 00:04:07,077 INFO L125 PetriNetUnfolderBase]: For 27953/27953 co-relation queries the response was YES. [2024-06-28 00:04:07,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11854 conditions, 2600 events. 1403/2600 cut-off events. For 27953/27953 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 17951 event pairs, 291 based on Foata normal form. 1/2545 useless extension candidates. Maximal degree in co-relation 11785. Up to 2095 conditions per place. [2024-06-28 00:04:07,097 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 131 selfloop transitions, 39 changer transitions 0/178 dead transitions. [2024-06-28 00:04:07,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 178 transitions, 2266 flow [2024-06-28 00:04:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:07,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 00:04:07,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 00:04:07,098 INFO L175 Difference]: Start difference. First operand has 150 places, 160 transitions, 1752 flow. Second operand 6 states and 132 transitions. [2024-06-28 00:04:07,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 178 transitions, 2266 flow [2024-06-28 00:04:07,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 178 transitions, 2214 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-06-28 00:04:07,160 INFO L231 Difference]: Finished difference. Result has 157 places, 167 transitions, 1925 flow [2024-06-28 00:04:07,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1925, PETRI_PLACES=157, PETRI_TRANSITIONS=167} [2024-06-28 00:04:07,160 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-06-28 00:04:07,161 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 167 transitions, 1925 flow [2024-06-28 00:04:07,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:07,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:07,161 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 00:04:07,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:04:07,161 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:07,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:07,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1363432807, now seen corresponding path program 6 times [2024-06-28 00:04:07,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:07,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387815203] [2024-06-28 00:04:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:07,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:07,366 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 00:04:07,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:07,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387815203] [2024-06-28 00:04:07,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387815203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:07,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:07,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:04:07,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016703843] [2024-06-28 00:04:07,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:07,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:04:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:04:07,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:04:07,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:07,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 167 transitions, 1925 flow. Second operand has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:07,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:07,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:07,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:07,764 INFO L124 PetriNetUnfolderBase]: 1400/2612 cut-off events. [2024-06-28 00:04:07,765 INFO L125 PetriNetUnfolderBase]: For 30251/30260 co-relation queries the response was YES. [2024-06-28 00:04:07,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12143 conditions, 2612 events. 1400/2612 cut-off events. For 30251/30260 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 18051 event pairs, 352 based on Foata normal form. 7/2566 useless extension candidates. Maximal degree in co-relation 12069. Up to 2204 conditions per place. [2024-06-28 00:04:07,791 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 148 selfloop transitions, 21 changer transitions 0/177 dead transitions. [2024-06-28 00:04:07,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 177 transitions, 2290 flow [2024-06-28 00:04:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:07,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-28 00:04:07,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 00:04:07,792 INFO L175 Difference]: Start difference. First operand has 157 places, 167 transitions, 1925 flow. Second operand 6 states and 130 transitions. [2024-06-28 00:04:07,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 177 transitions, 2290 flow [2024-06-28 00:04:07,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 177 transitions, 2227 flow, removed 26 selfloop flow, removed 1 redundant places. [2024-06-28 00:04:07,872 INFO L231 Difference]: Finished difference. Result has 162 places, 167 transitions, 1910 flow [2024-06-28 00:04:07,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1910, PETRI_PLACES=162, PETRI_TRANSITIONS=167} [2024-06-28 00:04:07,873 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-28 00:04:07,873 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 167 transitions, 1910 flow [2024-06-28 00:04:07,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 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 00:04:07,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:07,873 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 00:04:07,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:04:07,873 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:07,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:07,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1540468971, now seen corresponding path program 1 times [2024-06-28 00:04:07,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:07,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270191354] [2024-06-28 00:04:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:07,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:08,589 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 00:04:08,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:08,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270191354] [2024-06-28 00:04:08,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270191354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:08,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:08,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:08,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119012996] [2024-06-28 00:04:08,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:08,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:08,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:08,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:08,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:08,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:08,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 167 transitions, 1910 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:08,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:08,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:08,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:09,130 INFO L124 PetriNetUnfolderBase]: 1418/2614 cut-off events. [2024-06-28 00:04:09,130 INFO L125 PetriNetUnfolderBase]: For 32686/32686 co-relation queries the response was YES. [2024-06-28 00:04:09,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12274 conditions, 2614 events. 1418/2614 cut-off events. For 32686/32686 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 17920 event pairs, 257 based on Foata normal form. 4/2558 useless extension candidates. Maximal degree in co-relation 12198. Up to 1987 conditions per place. [2024-06-28 00:04:09,152 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 151 selfloop transitions, 43 changer transitions 0/202 dead transitions. [2024-06-28 00:04:09,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 202 transitions, 2490 flow [2024-06-28 00:04:09,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:09,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:09,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-28 00:04:09,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2024-06-28 00:04:09,153 INFO L175 Difference]: Start difference. First operand has 162 places, 167 transitions, 1910 flow. Second operand 7 states and 162 transitions. [2024-06-28 00:04:09,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 202 transitions, 2490 flow [2024-06-28 00:04:09,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 202 transitions, 2384 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:09,231 INFO L231 Difference]: Finished difference. Result has 166 places, 179 transitions, 2078 flow [2024-06-28 00:04:09,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2078, PETRI_PLACES=166, PETRI_TRANSITIONS=179} [2024-06-28 00:04:09,232 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-28 00:04:09,232 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 179 transitions, 2078 flow [2024-06-28 00:04:09,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:09,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:09,232 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 00:04:09,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:04:09,233 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:09,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:09,233 INFO L85 PathProgramCache]: Analyzing trace with hash -130413917, now seen corresponding path program 2 times [2024-06-28 00:04:09,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:09,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287613057] [2024-06-28 00:04:09,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:09,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:09,837 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 00:04:09,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:09,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287613057] [2024-06-28 00:04:09,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287613057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:09,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:09,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:09,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659236968] [2024-06-28 00:04:09,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:09,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:09,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:09,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:09,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:09,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:09,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 179 transitions, 2078 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:09,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:09,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:09,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:10,350 INFO L124 PetriNetUnfolderBase]: 1530/2806 cut-off events. [2024-06-28 00:04:10,350 INFO L125 PetriNetUnfolderBase]: For 44943/44943 co-relation queries the response was YES. [2024-06-28 00:04:10,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14225 conditions, 2806 events. 1530/2806 cut-off events. For 44943/44943 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 19346 event pairs, 357 based on Foata normal form. 9/2763 useless extension candidates. Maximal degree in co-relation 14147. Up to 2194 conditions per place. [2024-06-28 00:04:10,374 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 179 selfloop transitions, 28 changer transitions 0/215 dead transitions. [2024-06-28 00:04:10,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 215 transitions, 2827 flow [2024-06-28 00:04:10,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:10,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 00:04:10,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-28 00:04:10,375 INFO L175 Difference]: Start difference. First operand has 166 places, 179 transitions, 2078 flow. Second operand 7 states and 165 transitions. [2024-06-28 00:04:10,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 215 transitions, 2827 flow [2024-06-28 00:04:10,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 215 transitions, 2725 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-28 00:04:10,477 INFO L231 Difference]: Finished difference. Result has 171 places, 182 transitions, 2112 flow [2024-06-28 00:04:10,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2112, PETRI_PLACES=171, PETRI_TRANSITIONS=182} [2024-06-28 00:04:10,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-28 00:04:10,478 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 182 transitions, 2112 flow [2024-06-28 00:04:10,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:10,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:10,478 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 00:04:10,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:04:10,479 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:10,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:10,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1535707371, now seen corresponding path program 3 times [2024-06-28 00:04:10,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:10,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831698459] [2024-06-28 00:04:10,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:10,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:10,994 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 00:04:10,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:10,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831698459] [2024-06-28 00:04:10,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831698459] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:10,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:10,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:10,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235565951] [2024-06-28 00:04:10,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:10,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:10,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:10,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:10,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:11,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:11,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 182 transitions, 2112 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:11,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:11,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:11,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:11,547 INFO L124 PetriNetUnfolderBase]: 1535/2817 cut-off events. [2024-06-28 00:04:11,547 INFO L125 PetriNetUnfolderBase]: For 44111/44111 co-relation queries the response was YES. [2024-06-28 00:04:11,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14317 conditions, 2817 events. 1535/2817 cut-off events. For 44111/44111 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 19459 event pairs, 384 based on Foata normal form. 1/2766 useless extension candidates. Maximal degree in co-relation 14237. Up to 2420 conditions per place. [2024-06-28 00:04:11,567 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 171 selfloop transitions, 22 changer transitions 0/201 dead transitions. [2024-06-28 00:04:11,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 201 transitions, 2606 flow [2024-06-28 00:04:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:11,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:11,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-28 00:04:11,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-06-28 00:04:11,569 INFO L175 Difference]: Start difference. First operand has 171 places, 182 transitions, 2112 flow. Second operand 7 states and 151 transitions. [2024-06-28 00:04:11,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 201 transitions, 2606 flow [2024-06-28 00:04:11,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 201 transitions, 2492 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:11,677 INFO L231 Difference]: Finished difference. Result has 174 places, 188 transitions, 2138 flow [2024-06-28 00:04:11,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2004, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2138, PETRI_PLACES=174, PETRI_TRANSITIONS=188} [2024-06-28 00:04:11,677 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 133 predicate places. [2024-06-28 00:04:11,677 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 188 transitions, 2138 flow [2024-06-28 00:04:11,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:11,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:11,678 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 00:04:11,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:04:11,678 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:11,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:11,678 INFO L85 PathProgramCache]: Analyzing trace with hash -125765591, now seen corresponding path program 1 times [2024-06-28 00:04:11,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:11,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549361831] [2024-06-28 00:04:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:11,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:12,256 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 00:04:12,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:12,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549361831] [2024-06-28 00:04:12,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549361831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:12,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:12,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:12,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35612107] [2024-06-28 00:04:12,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:12,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:12,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:12,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:12,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:12,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:12,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 188 transitions, 2138 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:12,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:12,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:12,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:12,781 INFO L124 PetriNetUnfolderBase]: 1543/2832 cut-off events. [2024-06-28 00:04:12,782 INFO L125 PetriNetUnfolderBase]: For 45354/45354 co-relation queries the response was YES. [2024-06-28 00:04:12,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14113 conditions, 2832 events. 1543/2832 cut-off events. For 45354/45354 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 19566 event pairs, 368 based on Foata normal form. 2/2782 useless extension candidates. Maximal degree in co-relation 14033. Up to 2409 conditions per place. [2024-06-28 00:04:12,803 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 173 selfloop transitions, 24 changer transitions 0/205 dead transitions. [2024-06-28 00:04:12,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 205 transitions, 2594 flow [2024-06-28 00:04:12,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:12,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:12,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 00:04:12,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-28 00:04:12,805 INFO L175 Difference]: Start difference. First operand has 174 places, 188 transitions, 2138 flow. Second operand 6 states and 136 transitions. [2024-06-28 00:04:12,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 205 transitions, 2594 flow [2024-06-28 00:04:12,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 205 transitions, 2531 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-28 00:04:12,922 INFO L231 Difference]: Finished difference. Result has 177 places, 190 transitions, 2163 flow [2024-06-28 00:04:12,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2075, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2163, PETRI_PLACES=177, PETRI_TRANSITIONS=190} [2024-06-28 00:04:12,923 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 136 predicate places. [2024-06-28 00:04:12,923 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 190 transitions, 2163 flow [2024-06-28 00:04:12,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:12,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:12,924 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 00:04:12,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:04:12,924 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:12,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:12,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1619212441, now seen corresponding path program 4 times [2024-06-28 00:04:12,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:12,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680118126] [2024-06-28 00:04:12,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:12,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:13,512 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 00:04:13,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:13,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680118126] [2024-06-28 00:04:13,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680118126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:13,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778556638] [2024-06-28 00:04:13,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:13,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:13,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:13,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:13,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:13,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:13,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 190 transitions, 2163 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:13,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:13,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:13,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:13,954 INFO L124 PetriNetUnfolderBase]: 1568/2878 cut-off events. [2024-06-28 00:04:13,954 INFO L125 PetriNetUnfolderBase]: For 50832/50832 co-relation queries the response was YES. [2024-06-28 00:04:13,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14480 conditions, 2878 events. 1568/2878 cut-off events. For 50832/50832 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 19973 event pairs, 375 based on Foata normal form. 9/2835 useless extension candidates. Maximal degree in co-relation 14398. Up to 2442 conditions per place. [2024-06-28 00:04:13,980 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 185 selfloop transitions, 14 changer transitions 0/207 dead transitions. [2024-06-28 00:04:13,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 207 transitions, 2651 flow [2024-06-28 00:04:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-28 00:04:13,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321428571428571 [2024-06-28 00:04:13,982 INFO L175 Difference]: Start difference. First operand has 177 places, 190 transitions, 2163 flow. Second operand 7 states and 149 transitions. [2024-06-28 00:04:13,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 207 transitions, 2651 flow [2024-06-28 00:04:14,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 207 transitions, 2586 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:14,084 INFO L231 Difference]: Finished difference. Result has 179 places, 191 transitions, 2148 flow [2024-06-28 00:04:14,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2148, PETRI_PLACES=179, PETRI_TRANSITIONS=191} [2024-06-28 00:04:14,085 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-28 00:04:14,085 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 191 transitions, 2148 flow [2024-06-28 00:04:14,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:14,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:14,085 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 00:04:14,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:04:14,086 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:14,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:14,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1993797963, now seen corresponding path program 2 times [2024-06-28 00:04:14,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:14,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097242200] [2024-06-28 00:04:14,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:14,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:14,693 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 00:04:14,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:14,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097242200] [2024-06-28 00:04:14,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097242200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:14,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:14,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:14,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135153898] [2024-06-28 00:04:14,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:14,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:14,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:14,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:14,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:14,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:04:14,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 191 transitions, 2148 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:04:14,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:14,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:04:14,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:15,260 INFO L124 PetriNetUnfolderBase]: 1576/2892 cut-off events. [2024-06-28 00:04:15,260 INFO L125 PetriNetUnfolderBase]: For 47701/47701 co-relation queries the response was YES. [2024-06-28 00:04:15,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14541 conditions, 2892 events. 1576/2892 cut-off events. For 47701/47701 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 20098 event pairs, 375 based on Foata normal form. 2/2842 useless extension candidates. Maximal degree in co-relation 14458. Up to 2471 conditions per place. [2024-06-28 00:04:15,285 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 179 selfloop transitions, 20 changer transitions 0/206 dead transitions. [2024-06-28 00:04:15,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 206 transitions, 2620 flow [2024-06-28 00:04:15,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:15,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:15,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 00:04:15,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 00:04:15,287 INFO L175 Difference]: Start difference. First operand has 179 places, 191 transitions, 2148 flow. Second operand 7 states and 133 transitions. [2024-06-28 00:04:15,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 206 transitions, 2620 flow [2024-06-28 00:04:15,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 206 transitions, 2588 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:15,405 INFO L231 Difference]: Finished difference. Result has 181 places, 193 transitions, 2198 flow [2024-06-28 00:04:15,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2198, PETRI_PLACES=181, PETRI_TRANSITIONS=193} [2024-06-28 00:04:15,406 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 140 predicate places. [2024-06-28 00:04:15,406 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 193 transitions, 2198 flow [2024-06-28 00:04:15,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:04:15,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:15,407 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 00:04:15,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:04:15,407 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:15,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:15,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1985523753, now seen corresponding path program 3 times [2024-06-28 00:04:15,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:15,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536341709] [2024-06-28 00:04:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:15,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:15,988 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 00:04:15,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:15,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536341709] [2024-06-28 00:04:15,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536341709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:15,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:15,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466638353] [2024-06-28 00:04:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:15,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:15,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:16,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:16,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 193 transitions, 2198 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:16,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:16,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:16,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:16,436 INFO L124 PetriNetUnfolderBase]: 1571/2887 cut-off events. [2024-06-28 00:04:16,436 INFO L125 PetriNetUnfolderBase]: For 48792/48792 co-relation queries the response was YES. [2024-06-28 00:04:16,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14538 conditions, 2887 events. 1571/2887 cut-off events. For 48792/48792 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 20116 event pairs, 380 based on Foata normal form. 2/2837 useless extension candidates. Maximal degree in co-relation 14454. Up to 2472 conditions per place. [2024-06-28 00:04:16,461 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 183 selfloop transitions, 16 changer transitions 0/207 dead transitions. [2024-06-28 00:04:16,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 207 transitions, 2672 flow [2024-06-28 00:04:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:16,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 130 transitions. [2024-06-28 00:04:16,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-06-28 00:04:16,462 INFO L175 Difference]: Start difference. First operand has 181 places, 193 transitions, 2198 flow. Second operand 6 states and 130 transitions. [2024-06-28 00:04:16,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 207 transitions, 2672 flow [2024-06-28 00:04:16,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 207 transitions, 2617 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:16,560 INFO L231 Difference]: Finished difference. Result has 181 places, 195 transitions, 2221 flow [2024-06-28 00:04:16,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2221, PETRI_PLACES=181, PETRI_TRANSITIONS=195} [2024-06-28 00:04:16,560 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 140 predicate places. [2024-06-28 00:04:16,560 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 195 transitions, 2221 flow [2024-06-28 00:04:16,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:16,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:16,561 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 00:04:16,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:04:16,561 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:16,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:16,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1471678079, now seen corresponding path program 1 times [2024-06-28 00:04:16,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:16,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924043950] [2024-06-28 00:04:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:16,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:16,978 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 00:04:16,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:16,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924043950] [2024-06-28 00:04:16,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924043950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:16,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:16,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:16,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890814972] [2024-06-28 00:04:16,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:16,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:16,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:16,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:16,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:17,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:04:17,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 195 transitions, 2221 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:04:17,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:17,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:04:17,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:17,548 INFO L124 PetriNetUnfolderBase]: 1604/2938 cut-off events. [2024-06-28 00:04:17,549 INFO L125 PetriNetUnfolderBase]: For 49411/49414 co-relation queries the response was YES. [2024-06-28 00:04:17,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14910 conditions, 2938 events. 1604/2938 cut-off events. For 49411/49414 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 20334 event pairs, 356 based on Foata normal form. 4/2889 useless extension candidates. Maximal degree in co-relation 14826. Up to 2458 conditions per place. [2024-06-28 00:04:17,575 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 199 selfloop transitions, 26 changer transitions 0/232 dead transitions. [2024-06-28 00:04:17,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 232 transitions, 2885 flow [2024-06-28 00:04:17,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:04:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:04:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 00:04:17,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4725 [2024-06-28 00:04:17,576 INFO L175 Difference]: Start difference. First operand has 181 places, 195 transitions, 2221 flow. Second operand 10 states and 189 transitions. [2024-06-28 00:04:17,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 232 transitions, 2885 flow [2024-06-28 00:04:17,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 232 transitions, 2843 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:17,677 INFO L231 Difference]: Finished difference. Result has 191 places, 207 transitions, 2425 flow [2024-06-28 00:04:17,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2179, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2425, PETRI_PLACES=191, PETRI_TRANSITIONS=207} [2024-06-28 00:04:17,679 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-28 00:04:17,679 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 207 transitions, 2425 flow [2024-06-28 00:04:17,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:04:17,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:17,680 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 00:04:17,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:04:17,680 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:17,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:17,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1871541319, now seen corresponding path program 1 times [2024-06-28 00:04:17,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:17,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830641122] [2024-06-28 00:04:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:17,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:18,430 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 00:04:18,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:18,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830641122] [2024-06-28 00:04:18,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830641122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:18,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:18,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:18,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344684245] [2024-06-28 00:04:18,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:18,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:18,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:18,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:18,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:18,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:18,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 207 transitions, 2425 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:18,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:18,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:18,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:18,989 INFO L124 PetriNetUnfolderBase]: 1704/3085 cut-off events. [2024-06-28 00:04:18,989 INFO L125 PetriNetUnfolderBase]: For 62206/62206 co-relation queries the response was YES. [2024-06-28 00:04:19,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16406 conditions, 3085 events. 1704/3085 cut-off events. For 62206/62206 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 21427 event pairs, 303 based on Foata normal form. 9/3036 useless extension candidates. Maximal degree in co-relation 16317. Up to 2306 conditions per place. [2024-06-28 00:04:19,016 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 165 selfloop transitions, 66 changer transitions 0/239 dead transitions. [2024-06-28 00:04:19,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 239 transitions, 3216 flow [2024-06-28 00:04:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:19,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:19,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 00:04:19,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-28 00:04:19,022 INFO L175 Difference]: Start difference. First operand has 191 places, 207 transitions, 2425 flow. Second operand 7 states and 165 transitions. [2024-06-28 00:04:19,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 239 transitions, 3216 flow [2024-06-28 00:04:19,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 239 transitions, 3128 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 00:04:19,176 INFO L231 Difference]: Finished difference. Result has 197 places, 214 transitions, 2654 flow [2024-06-28 00:04:19,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2654, PETRI_PLACES=197, PETRI_TRANSITIONS=214} [2024-06-28 00:04:19,177 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-28 00:04:19,177 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 214 transitions, 2654 flow [2024-06-28 00:04:19,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:19,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:19,177 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 00:04:19,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:04:19,177 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:19,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1101292651, now seen corresponding path program 2 times [2024-06-28 00:04:19,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:19,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878444913] [2024-06-28 00:04:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:19,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:19,703 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 00:04:19,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:19,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878444913] [2024-06-28 00:04:19,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878444913] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:19,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:19,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:19,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737683853] [2024-06-28 00:04:19,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:19,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:19,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:19,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:19,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:19,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:19,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 214 transitions, 2654 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:19,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:19,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:19,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:20,338 INFO L124 PetriNetUnfolderBase]: 1725/3119 cut-off events. [2024-06-28 00:04:20,339 INFO L125 PetriNetUnfolderBase]: For 65575/65575 co-relation queries the response was YES. [2024-06-28 00:04:20,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17396 conditions, 3119 events. 1725/3119 cut-off events. For 65575/65575 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 21667 event pairs, 325 based on Foata normal form. 2/3067 useless extension candidates. Maximal degree in co-relation 17305. Up to 2478 conditions per place. [2024-06-28 00:04:20,366 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 177 selfloop transitions, 54 changer transitions 0/239 dead transitions. [2024-06-28 00:04:20,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 239 transitions, 3396 flow [2024-06-28 00:04:20,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:20,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 00:04:20,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5678571428571428 [2024-06-28 00:04:20,368 INFO L175 Difference]: Start difference. First operand has 197 places, 214 transitions, 2654 flow. Second operand 7 states and 159 transitions. [2024-06-28 00:04:20,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 239 transitions, 3396 flow [2024-06-28 00:04:20,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 239 transitions, 3348 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 00:04:20,545 INFO L231 Difference]: Finished difference. Result has 201 places, 218 transitions, 2819 flow [2024-06-28 00:04:20,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2819, PETRI_PLACES=201, PETRI_TRANSITIONS=218} [2024-06-28 00:04:20,548 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-28 00:04:20,548 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 218 transitions, 2819 flow [2024-06-28 00:04:20,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:20,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:20,549 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 00:04:20,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:04:20,549 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:20,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash 177271796, now seen corresponding path program 1 times [2024-06-28 00:04:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:20,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264695862] [2024-06-28 00:04:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:20,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:21,038 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 00:04:21,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:21,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264695862] [2024-06-28 00:04:21,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264695862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:21,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:21,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:21,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090726650] [2024-06-28 00:04:21,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:21,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:21,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:21,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:21,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:21,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:21,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 218 transitions, 2819 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:21,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:21,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:21,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:21,617 INFO L124 PetriNetUnfolderBase]: 1773/3199 cut-off events. [2024-06-28 00:04:21,617 INFO L125 PetriNetUnfolderBase]: For 75243/75243 co-relation queries the response was YES. [2024-06-28 00:04:21,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18323 conditions, 3199 events. 1773/3199 cut-off events. For 75243/75243 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 22291 event pairs, 327 based on Foata normal form. 8/3148 useless extension candidates. Maximal degree in co-relation 18231. Up to 2519 conditions per place. [2024-06-28 00:04:21,677 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 179 selfloop transitions, 52 changer transitions 0/239 dead transitions. [2024-06-28 00:04:21,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 239 transitions, 3477 flow [2024-06-28 00:04:21,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 00:04:21,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 00:04:21,679 INFO L175 Difference]: Start difference. First operand has 201 places, 218 transitions, 2819 flow. Second operand 6 states and 140 transitions. [2024-06-28 00:04:21,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 239 transitions, 3477 flow [2024-06-28 00:04:21,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 239 transitions, 3334 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 00:04:21,882 INFO L231 Difference]: Finished difference. Result has 204 places, 222 transitions, 2888 flow [2024-06-28 00:04:21,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2680, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2888, PETRI_PLACES=204, PETRI_TRANSITIONS=222} [2024-06-28 00:04:21,883 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-28 00:04:21,883 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 222 transitions, 2888 flow [2024-06-28 00:04:21,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:21,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:21,888 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 00:04:21,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:04:21,888 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:21,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:21,889 INFO L85 PathProgramCache]: Analyzing trace with hash 177271393, now seen corresponding path program 3 times [2024-06-28 00:04:21,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:21,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895526604] [2024-06-28 00:04:21,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:21,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:22,515 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 00:04:22,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:22,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895526604] [2024-06-28 00:04:22,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895526604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:22,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:22,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:22,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710253212] [2024-06-28 00:04:22,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:22,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:22,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:22,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:22,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:22,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:22,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 222 transitions, 2888 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:22,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:22,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:22,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:23,339 INFO L124 PetriNetUnfolderBase]: 1781/3217 cut-off events. [2024-06-28 00:04:23,339 INFO L125 PetriNetUnfolderBase]: For 72404/72404 co-relation queries the response was YES. [2024-06-28 00:04:23,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18403 conditions, 3217 events. 1781/3217 cut-off events. For 72404/72404 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 22457 event pairs, 310 based on Foata normal form. 2/3165 useless extension candidates. Maximal degree in co-relation 18310. Up to 2565 conditions per place. [2024-06-28 00:04:23,376 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 175 selfloop transitions, 58 changer transitions 0/241 dead transitions. [2024-06-28 00:04:23,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 241 transitions, 3490 flow [2024-06-28 00:04:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:23,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 00:04:23,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-06-28 00:04:23,378 INFO L175 Difference]: Start difference. First operand has 204 places, 222 transitions, 2888 flow. Second operand 7 states and 156 transitions. [2024-06-28 00:04:23,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 241 transitions, 3490 flow [2024-06-28 00:04:23,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 241 transitions, 3412 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:23,577 INFO L231 Difference]: Finished difference. Result has 207 places, 224 transitions, 2961 flow [2024-06-28 00:04:23,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2961, PETRI_PLACES=207, PETRI_TRANSITIONS=224} [2024-06-28 00:04:23,578 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-28 00:04:23,578 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 224 transitions, 2961 flow [2024-06-28 00:04:23,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:23,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:23,579 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 00:04:23,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:04:23,579 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:23,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash 177271579, now seen corresponding path program 2 times [2024-06-28 00:04:23,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:23,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905548021] [2024-06-28 00:04:23,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:23,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:23,996 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 00:04:23,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:23,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905548021] [2024-06-28 00:04:23,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905548021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:23,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:23,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:23,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575752110] [2024-06-28 00:04:23,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:23,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:23,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:23,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:23,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:24,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:24,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 224 transitions, 2961 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:24,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:24,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:24,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:24,579 INFO L124 PetriNetUnfolderBase]: 1814/3272 cut-off events. [2024-06-28 00:04:24,579 INFO L125 PetriNetUnfolderBase]: For 74057/74057 co-relation queries the response was YES. [2024-06-28 00:04:24,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18736 conditions, 3272 events. 1814/3272 cut-off events. For 74057/74057 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 22839 event pairs, 337 based on Foata normal form. 9/3222 useless extension candidates. Maximal degree in co-relation 18643. Up to 2611 conditions per place. [2024-06-28 00:04:24,609 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 178 selfloop transitions, 58 changer transitions 0/244 dead transitions. [2024-06-28 00:04:24,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 244 transitions, 3523 flow [2024-06-28 00:04:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 00:04:24,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2024-06-28 00:04:24,610 INFO L175 Difference]: Start difference. First operand has 207 places, 224 transitions, 2961 flow. Second operand 7 states and 158 transitions. [2024-06-28 00:04:24,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 244 transitions, 3523 flow [2024-06-28 00:04:24,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 244 transitions, 3439 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 00:04:24,802 INFO L231 Difference]: Finished difference. Result has 211 places, 226 transitions, 3041 flow [2024-06-28 00:04:24,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3041, PETRI_PLACES=211, PETRI_TRANSITIONS=226} [2024-06-28 00:04:24,802 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-06-28 00:04:24,803 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 226 transitions, 3041 flow [2024-06-28 00:04:24,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:24,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:24,803 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 00:04:24,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:04:24,803 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:24,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:24,804 INFO L85 PathProgramCache]: Analyzing trace with hash 384192146, now seen corresponding path program 2 times [2024-06-28 00:04:24,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:24,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283413704] [2024-06-28 00:04:24,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:24,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:25,235 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 00:04:25,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:25,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283413704] [2024-06-28 00:04:25,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283413704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:25,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:25,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:25,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133772118] [2024-06-28 00:04:25,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:25,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:25,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:25,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:25,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:25,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:04:25,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 226 transitions, 3041 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:04:25,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:25,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:04:25,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:25,863 INFO L124 PetriNetUnfolderBase]: 1839/3319 cut-off events. [2024-06-28 00:04:25,863 INFO L125 PetriNetUnfolderBase]: For 76823/76823 co-relation queries the response was YES. [2024-06-28 00:04:25,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19269 conditions, 3319 events. 1839/3319 cut-off events. For 76823/76823 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 23368 event pairs, 316 based on Foata normal form. 6/3272 useless extension candidates. Maximal degree in co-relation 19174. Up to 2762 conditions per place. [2024-06-28 00:04:25,896 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 217 selfloop transitions, 26 changer transitions 0/250 dead transitions. [2024-06-28 00:04:25,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 250 transitions, 3702 flow [2024-06-28 00:04:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 00:04:25,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 00:04:25,898 INFO L175 Difference]: Start difference. First operand has 211 places, 226 transitions, 3041 flow. Second operand 7 states and 140 transitions. [2024-06-28 00:04:25,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 250 transitions, 3702 flow [2024-06-28 00:04:26,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 250 transitions, 3532 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:26,153 INFO L231 Difference]: Finished difference. Result has 212 places, 231 transitions, 3060 flow [2024-06-28 00:04:26,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2880, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3060, PETRI_PLACES=212, PETRI_TRANSITIONS=231} [2024-06-28 00:04:26,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-28 00:04:26,154 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 231 transitions, 3060 flow [2024-06-28 00:04:26,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:04:26,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:26,154 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 00:04:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:04:26,155 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:26,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1793951165, now seen corresponding path program 3 times [2024-06-28 00:04:26,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:26,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963911655] [2024-06-28 00:04:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:26,569 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 00:04:26,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:26,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963911655] [2024-06-28 00:04:26,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963911655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:26,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:26,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:26,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731891930] [2024-06-28 00:04:26,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:26,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:26,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:26,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:26,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 231 transitions, 3060 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:26,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:26,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:26,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:27,171 INFO L124 PetriNetUnfolderBase]: 1818/3291 cut-off events. [2024-06-28 00:04:27,171 INFO L125 PetriNetUnfolderBase]: For 76095/76095 co-relation queries the response was YES. [2024-06-28 00:04:27,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18723 conditions, 3291 events. 1818/3291 cut-off events. For 76095/76095 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 23178 event pairs, 331 based on Foata normal form. 9/3241 useless extension candidates. Maximal degree in co-relation 18627. Up to 2708 conditions per place. [2024-06-28 00:04:27,202 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 197 selfloop transitions, 39 changer transitions 0/244 dead transitions. [2024-06-28 00:04:27,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 244 transitions, 3578 flow [2024-06-28 00:04:27,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:27,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2024-06-28 00:04:27,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-28 00:04:27,203 INFO L175 Difference]: Start difference. First operand has 212 places, 231 transitions, 3060 flow. Second operand 6 states and 134 transitions. [2024-06-28 00:04:27,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 244 transitions, 3578 flow [2024-06-28 00:04:27,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 244 transitions, 3504 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:27,439 INFO L231 Difference]: Finished difference. Result has 213 places, 231 transitions, 3075 flow [2024-06-28 00:04:27,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3075, PETRI_PLACES=213, PETRI_TRANSITIONS=231} [2024-06-28 00:04:27,440 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 172 predicate places. [2024-06-28 00:04:27,440 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 231 transitions, 3075 flow [2024-06-28 00:04:27,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:27,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:27,441 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 00:04:27,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:04:27,441 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:27,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:27,441 INFO L85 PathProgramCache]: Analyzing trace with hash -45361552, now seen corresponding path program 3 times [2024-06-28 00:04:27,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:27,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536895321] [2024-06-28 00:04:27,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:27,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:27,804 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 00:04:27,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:27,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536895321] [2024-06-28 00:04:27,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536895321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:27,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:27,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:27,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036817227] [2024-06-28 00:04:27,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:27,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:27,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:27,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:27,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 231 transitions, 3075 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:27,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:27,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:27,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:28,376 INFO L124 PetriNetUnfolderBase]: 1805/3270 cut-off events. [2024-06-28 00:04:28,377 INFO L125 PetriNetUnfolderBase]: For 72200/72200 co-relation queries the response was YES. [2024-06-28 00:04:28,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18419 conditions, 3270 events. 1805/3270 cut-off events. For 72200/72200 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 23039 event pairs, 330 based on Foata normal form. 6/3217 useless extension candidates. Maximal degree in co-relation 18323. Up to 2703 conditions per place. [2024-06-28 00:04:28,441 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 199 selfloop transitions, 34 changer transitions 0/241 dead transitions. [2024-06-28 00:04:28,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 241 transitions, 3563 flow [2024-06-28 00:04:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:04:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:04:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-28 00:04:28,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.57 [2024-06-28 00:04:28,443 INFO L175 Difference]: Start difference. First operand has 213 places, 231 transitions, 3075 flow. Second operand 5 states and 114 transitions. [2024-06-28 00:04:28,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 241 transitions, 3563 flow [2024-06-28 00:04:28,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 241 transitions, 3474 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:28,650 INFO L231 Difference]: Finished difference. Result has 214 places, 231 transitions, 3073 flow [2024-06-28 00:04:28,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2986, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3073, PETRI_PLACES=214, PETRI_TRANSITIONS=231} [2024-06-28 00:04:28,650 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-28 00:04:28,650 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 231 transitions, 3073 flow [2024-06-28 00:04:28,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:28,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:28,652 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 00:04:28,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:04:28,654 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:28,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:28,654 INFO L85 PathProgramCache]: Analyzing trace with hash 383924833, now seen corresponding path program 4 times [2024-06-28 00:04:28,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:28,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430826920] [2024-06-28 00:04:28,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:29,073 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 00:04:29,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:29,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430826920] [2024-06-28 00:04:29,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430826920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:29,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:29,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:29,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589733780] [2024-06-28 00:04:29,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:29,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:29,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:29,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:29,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:29,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:29,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 231 transitions, 3073 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:29,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:29,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:29,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:29,734 INFO L124 PetriNetUnfolderBase]: 1812/3283 cut-off events. [2024-06-28 00:04:29,734 INFO L125 PetriNetUnfolderBase]: For 73825/73825 co-relation queries the response was YES. [2024-06-28 00:04:29,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18458 conditions, 3283 events. 1812/3283 cut-off events. For 73825/73825 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 23213 event pairs, 335 based on Foata normal form. 6/3231 useless extension candidates. Maximal degree in co-relation 18361. Up to 2726 conditions per place. [2024-06-28 00:04:29,762 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 200 selfloop transitions, 38 changer transitions 0/246 dead transitions. [2024-06-28 00:04:29,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 246 transitions, 3609 flow [2024-06-28 00:04:29,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:29,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 00:04:29,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 00:04:29,763 INFO L175 Difference]: Start difference. First operand has 214 places, 231 transitions, 3073 flow. Second operand 7 states and 150 transitions. [2024-06-28 00:04:29,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 246 transitions, 3609 flow [2024-06-28 00:04:29,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 246 transitions, 3497 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:29,939 INFO L231 Difference]: Finished difference. Result has 217 places, 232 transitions, 3079 flow [2024-06-28 00:04:29,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2961, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3079, PETRI_PLACES=217, PETRI_TRANSITIONS=232} [2024-06-28 00:04:29,940 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-28 00:04:29,940 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 232 transitions, 3079 flow [2024-06-28 00:04:29,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:29,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:29,940 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 00:04:29,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:04:29,940 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:29,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:29,941 INFO L85 PathProgramCache]: Analyzing trace with hash 239748025, now seen corresponding path program 4 times [2024-06-28 00:04:29,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:29,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323232812] [2024-06-28 00:04:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:29,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:30,530 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 00:04:30,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:30,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323232812] [2024-06-28 00:04:30,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323232812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:30,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:30,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:30,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831601664] [2024-06-28 00:04:30,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:30,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:30,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:30,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:30,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:30,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:30,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 232 transitions, 3079 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:30,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:30,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:30,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:31,213 INFO L124 PetriNetUnfolderBase]: 1858/3365 cut-off events. [2024-06-28 00:04:31,213 INFO L125 PetriNetUnfolderBase]: For 81473/81473 co-relation queries the response was YES. [2024-06-28 00:04:31,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18938 conditions, 3365 events. 1858/3365 cut-off events. For 81473/81473 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 23879 event pairs, 259 based on Foata normal form. 11/3316 useless extension candidates. Maximal degree in co-relation 18840. Up to 2487 conditions per place. [2024-06-28 00:04:31,249 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 208 selfloop transitions, 49 changer transitions 0/265 dead transitions. [2024-06-28 00:04:31,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 265 transitions, 3750 flow [2024-06-28 00:04:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-06-28 00:04:31,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2024-06-28 00:04:31,250 INFO L175 Difference]: Start difference. First operand has 217 places, 232 transitions, 3079 flow. Second operand 7 states and 165 transitions. [2024-06-28 00:04:31,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 265 transitions, 3750 flow [2024-06-28 00:04:31,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 265 transitions, 3616 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:31,470 INFO L231 Difference]: Finished difference. Result has 219 places, 235 transitions, 3096 flow [2024-06-28 00:04:31,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3096, PETRI_PLACES=219, PETRI_TRANSITIONS=235} [2024-06-28 00:04:31,470 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 178 predicate places. [2024-06-28 00:04:31,471 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 235 transitions, 3096 flow [2024-06-28 00:04:31,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:31,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:31,471 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 00:04:31,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:04:31,471 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:31,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:31,472 INFO L85 PathProgramCache]: Analyzing trace with hash -746646515, now seen corresponding path program 5 times [2024-06-28 00:04:31,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:31,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236194409] [2024-06-28 00:04:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:31,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:31,995 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 00:04:31,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:31,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236194409] [2024-06-28 00:04:31,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236194409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:31,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:31,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:31,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069933441] [2024-06-28 00:04:31,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:31,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:31,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:31,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:31,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:32,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:32,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 235 transitions, 3096 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:32,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:32,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:32,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:32,739 INFO L124 PetriNetUnfolderBase]: 1879/3409 cut-off events. [2024-06-28 00:04:32,739 INFO L125 PetriNetUnfolderBase]: For 80855/80855 co-relation queries the response was YES. [2024-06-28 00:04:32,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19497 conditions, 3409 events. 1879/3409 cut-off events. For 80855/80855 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 24229 event pairs, 304 based on Foata normal form. 2/3359 useless extension candidates. Maximal degree in co-relation 19398. Up to 2771 conditions per place. [2024-06-28 00:04:32,775 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 222 selfloop transitions, 34 changer transitions 0/264 dead transitions. [2024-06-28 00:04:32,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 264 transitions, 3852 flow [2024-06-28 00:04:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:04:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:04:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-28 00:04:32,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361111111111111 [2024-06-28 00:04:32,777 INFO L175 Difference]: Start difference. First operand has 219 places, 235 transitions, 3096 flow. Second operand 9 states and 193 transitions. [2024-06-28 00:04:32,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 264 transitions, 3852 flow [2024-06-28 00:04:32,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 264 transitions, 3700 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:32,982 INFO L231 Difference]: Finished difference. Result has 222 places, 239 transitions, 3125 flow [2024-06-28 00:04:32,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2944, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3125, PETRI_PLACES=222, PETRI_TRANSITIONS=239} [2024-06-28 00:04:32,982 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-28 00:04:32,982 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 239 transitions, 3125 flow [2024-06-28 00:04:32,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:32,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:32,983 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 00:04:32,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:04:32,983 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:32,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash -506186459, now seen corresponding path program 5 times [2024-06-28 00:04:32,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:32,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230455006] [2024-06-28 00:04:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:32,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:33,684 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 00:04:33,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:33,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230455006] [2024-06-28 00:04:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230455006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:33,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:33,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:33,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270392277] [2024-06-28 00:04:33,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:33,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:33,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:33,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:33,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:04:33,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 239 transitions, 3125 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 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 00:04:33,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:33,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:04:33,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:34,397 INFO L124 PetriNetUnfolderBase]: 1905/3450 cut-off events. [2024-06-28 00:04:34,397 INFO L125 PetriNetUnfolderBase]: For 85552/85552 co-relation queries the response was YES. [2024-06-28 00:04:34,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19839 conditions, 3450 events. 1905/3450 cut-off events. For 85552/85552 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 24619 event pairs, 341 based on Foata normal form. 1/3391 useless extension candidates. Maximal degree in co-relation 19738. Up to 2598 conditions per place. [2024-06-28 00:04:34,437 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 179 selfloop transitions, 95 changer transitions 0/281 dead transitions. [2024-06-28 00:04:34,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 281 transitions, 4300 flow [2024-06-28 00:04:34,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 00:04:34,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 00:04:34,438 INFO L175 Difference]: Start difference. First operand has 222 places, 239 transitions, 3125 flow. Second operand 8 states and 170 transitions. [2024-06-28 00:04:34,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 281 transitions, 4300 flow [2024-06-28 00:04:34,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 281 transitions, 4164 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:34,667 INFO L231 Difference]: Finished difference. Result has 226 places, 259 transitions, 3573 flow [2024-06-28 00:04:34,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2989, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3573, PETRI_PLACES=226, PETRI_TRANSITIONS=259} [2024-06-28 00:04:34,667 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-06-28 00:04:34,667 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 259 transitions, 3573 flow [2024-06-28 00:04:34,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 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 00:04:34,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:34,668 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 00:04:34,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:04:34,669 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:34,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:34,669 INFO L85 PathProgramCache]: Analyzing trace with hash -746467769, now seen corresponding path program 6 times [2024-06-28 00:04:34,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:34,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032803145] [2024-06-28 00:04:34,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:34,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:35,242 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 00:04:35,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032803145] [2024-06-28 00:04:35,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032803145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:35,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:35,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:35,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90153450] [2024-06-28 00:04:35,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:35,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:35,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:35,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:35,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:35,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:35,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 259 transitions, 3573 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:35,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:35,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:35,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:35,890 INFO L124 PetriNetUnfolderBase]: 1931/3490 cut-off events. [2024-06-28 00:04:35,890 INFO L125 PetriNetUnfolderBase]: For 93111/93111 co-relation queries the response was YES. [2024-06-28 00:04:35,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20743 conditions, 3490 events. 1931/3490 cut-off events. For 93111/93111 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 24849 event pairs, 339 based on Foata normal form. 3/3431 useless extension candidates. Maximal degree in co-relation 20639. Up to 2867 conditions per place. [2024-06-28 00:04:35,928 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 245 selfloop transitions, 38 changer transitions 0/291 dead transitions. [2024-06-28 00:04:35,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 291 transitions, 4473 flow [2024-06-28 00:04:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:04:35,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:04:35,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-28 00:04:35,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-06-28 00:04:35,929 INFO L175 Difference]: Start difference. First operand has 226 places, 259 transitions, 3573 flow. Second operand 8 states and 178 transitions. [2024-06-28 00:04:35,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 291 transitions, 4473 flow [2024-06-28 00:04:36,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 291 transitions, 4186 flow, removed 89 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:36,239 INFO L231 Difference]: Finished difference. Result has 231 places, 266 transitions, 3562 flow [2024-06-28 00:04:36,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3322, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3562, PETRI_PLACES=231, PETRI_TRANSITIONS=266} [2024-06-28 00:04:36,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-28 00:04:36,239 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 266 transitions, 3562 flow [2024-06-28 00:04:36,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:36,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:36,240 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 00:04:36,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:04:36,240 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:36,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash 11996822, now seen corresponding path program 4 times [2024-06-28 00:04:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:36,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677282692] [2024-06-28 00:04:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:36,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:36,576 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 00:04:36,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:36,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677282692] [2024-06-28 00:04:36,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677282692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:36,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:36,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:36,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667375889] [2024-06-28 00:04:36,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:36,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:36,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:36,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:36,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:36,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:36,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 266 transitions, 3562 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:36,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:36,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:36,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:37,281 INFO L124 PetriNetUnfolderBase]: 1939/3506 cut-off events. [2024-06-28 00:04:37,281 INFO L125 PetriNetUnfolderBase]: For 95082/95082 co-relation queries the response was YES. [2024-06-28 00:04:37,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20645 conditions, 3506 events. 1939/3506 cut-off events. For 95082/95082 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 24986 event pairs, 341 based on Foata normal form. 2/3446 useless extension candidates. Maximal degree in co-relation 20540. Up to 2905 conditions per place. [2024-06-28 00:04:37,316 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 248 selfloop transitions, 28 changer transitions 0/284 dead transitions. [2024-06-28 00:04:37,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 284 transitions, 4210 flow [2024-06-28 00:04:37,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:37,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:37,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-28 00:04:37,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-28 00:04:37,317 INFO L175 Difference]: Start difference. First operand has 231 places, 266 transitions, 3562 flow. Second operand 6 states and 136 transitions. [2024-06-28 00:04:37,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 284 transitions, 4210 flow [2024-06-28 00:04:37,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 284 transitions, 4057 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:37,602 INFO L231 Difference]: Finished difference. Result has 232 places, 268 transitions, 3534 flow [2024-06-28 00:04:37,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3534, PETRI_PLACES=232, PETRI_TRANSITIONS=268} [2024-06-28 00:04:37,603 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-28 00:04:37,603 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 268 transitions, 3534 flow [2024-06-28 00:04:37,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:37,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:37,603 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 00:04:37,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:04:37,604 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:37,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash 11996419, now seen corresponding path program 6 times [2024-06-28 00:04:37,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:37,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218037136] [2024-06-28 00:04:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:37,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:38,016 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 00:04:38,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:38,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218037136] [2024-06-28 00:04:38,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218037136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:38,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:38,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:38,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652442999] [2024-06-28 00:04:38,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:38,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:38,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:38,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:38,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:38,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:38,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 268 transitions, 3534 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:38,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:38,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:38,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:38,838 INFO L124 PetriNetUnfolderBase]: 1934/3499 cut-off events. [2024-06-28 00:04:38,838 INFO L125 PetriNetUnfolderBase]: For 96208/96208 co-relation queries the response was YES. [2024-06-28 00:04:38,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20546 conditions, 3499 events. 1934/3499 cut-off events. For 96208/96208 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 24905 event pairs, 305 based on Foata normal form. 2/3450 useless extension candidates. Maximal degree in co-relation 20439. Up to 2854 conditions per place. [2024-06-28 00:04:38,869 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 246 selfloop transitions, 33 changer transitions 0/287 dead transitions. [2024-06-28 00:04:38,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 287 transitions, 4136 flow [2024-06-28 00:04:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:38,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 00:04:38,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-28 00:04:38,870 INFO L175 Difference]: Start difference. First operand has 232 places, 268 transitions, 3534 flow. Second operand 7 states and 155 transitions. [2024-06-28 00:04:38,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 287 transitions, 4136 flow [2024-06-28 00:04:39,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 287 transitions, 4040 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 00:04:39,099 INFO L231 Difference]: Finished difference. Result has 236 places, 268 transitions, 3509 flow [2024-06-28 00:04:39,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3438, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3509, PETRI_PLACES=236, PETRI_TRANSITIONS=268} [2024-06-28 00:04:39,099 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-28 00:04:39,100 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 268 transitions, 3509 flow [2024-06-28 00:04:39,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:39,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:39,100 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 00:04:39,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:04:39,100 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:39,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash 382894555, now seen corresponding path program 7 times [2024-06-28 00:04:39,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:39,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805513689] [2024-06-28 00:04:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:39,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:39,615 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 00:04:39,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:39,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805513689] [2024-06-28 00:04:39,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805513689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:39,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360999095] [2024-06-28 00:04:39,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:39,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:39,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:39,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 268 transitions, 3509 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:39,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:39,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:39,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:40,296 INFO L124 PetriNetUnfolderBase]: 1931/3495 cut-off events. [2024-06-28 00:04:40,297 INFO L125 PetriNetUnfolderBase]: For 96756/96756 co-relation queries the response was YES. [2024-06-28 00:04:40,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20493 conditions, 3495 events. 1931/3495 cut-off events. For 96756/96756 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 24931 event pairs, 339 based on Foata normal form. 1/3435 useless extension candidates. Maximal degree in co-relation 20385. Up to 2897 conditions per place. [2024-06-28 00:04:40,339 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 247 selfloop transitions, 30 changer transitions 0/285 dead transitions. [2024-06-28 00:04:40,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 285 transitions, 4116 flow [2024-06-28 00:04:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:40,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 00:04:40,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464285714285714 [2024-06-28 00:04:40,340 INFO L175 Difference]: Start difference. First operand has 236 places, 268 transitions, 3509 flow. Second operand 7 states and 153 transitions. [2024-06-28 00:04:40,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 285 transitions, 4116 flow [2024-06-28 00:04:40,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 285 transitions, 4050 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:40,728 INFO L231 Difference]: Finished difference. Result has 237 places, 269 transitions, 3526 flow [2024-06-28 00:04:40,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3443, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3526, PETRI_PLACES=237, PETRI_TRANSITIONS=269} [2024-06-28 00:04:40,729 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 00:04:40,729 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 269 transitions, 3526 flow [2024-06-28 00:04:40,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:40,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:40,730 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 00:04:40,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:04:40,730 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:40,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:40,730 INFO L85 PathProgramCache]: Analyzing trace with hash -362533265, now seen corresponding path program 7 times [2024-06-28 00:04:40,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:40,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144795499] [2024-06-28 00:04:40,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:40,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:41,179 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 00:04:41,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:41,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144795499] [2024-06-28 00:04:41,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144795499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:41,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:41,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:41,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369078361] [2024-06-28 00:04:41,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:41,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:41,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:41,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:41,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:41,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:41,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 269 transitions, 3526 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:41,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:41,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:41,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:41,900 INFO L124 PetriNetUnfolderBase]: 1939/3511 cut-off events. [2024-06-28 00:04:41,900 INFO L125 PetriNetUnfolderBase]: For 102175/102175 co-relation queries the response was YES. [2024-06-28 00:04:41,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20699 conditions, 3511 events. 1939/3511 cut-off events. For 102175/102175 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 25074 event pairs, 287 based on Foata normal form. 2/3466 useless extension candidates. Maximal degree in co-relation 20590. Up to 2718 conditions per place. [2024-06-28 00:04:41,939 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 203 selfloop transitions, 78 changer transitions 0/289 dead transitions. [2024-06-28 00:04:41,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 289 transitions, 4330 flow [2024-06-28 00:04:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:41,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 00:04:41,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-28 00:04:41,941 INFO L175 Difference]: Start difference. First operand has 237 places, 269 transitions, 3526 flow. Second operand 7 states and 155 transitions. [2024-06-28 00:04:41,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 289 transitions, 4330 flow [2024-06-28 00:04:42,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 289 transitions, 4242 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:42,227 INFO L231 Difference]: Finished difference. Result has 239 places, 273 transitions, 3715 flow [2024-06-28 00:04:42,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3438, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3715, PETRI_PLACES=239, PETRI_TRANSITIONS=273} [2024-06-28 00:04:42,228 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-28 00:04:42,228 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 273 transitions, 3715 flow [2024-06-28 00:04:42,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:42,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:42,229 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 00:04:42,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:04:42,229 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:42,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:42,230 INFO L85 PathProgramCache]: Analyzing trace with hash -362533079, now seen corresponding path program 8 times [2024-06-28 00:04:42,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:42,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348408256] [2024-06-28 00:04:42,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:42,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:42,704 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 00:04:42,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:42,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348408256] [2024-06-28 00:04:42,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348408256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:42,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:42,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:42,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705915795] [2024-06-28 00:04:42,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:42,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:42,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:42,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:42,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:42,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:42,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 273 transitions, 3715 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:42,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:42,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:42,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:43,384 INFO L124 PetriNetUnfolderBase]: 1944/3516 cut-off events. [2024-06-28 00:04:43,384 INFO L125 PetriNetUnfolderBase]: For 105744/105744 co-relation queries the response was YES. [2024-06-28 00:04:43,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21068 conditions, 3516 events. 1944/3516 cut-off events. For 105744/105744 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 25103 event pairs, 343 based on Foata normal form. 1/3458 useless extension candidates. Maximal degree in co-relation 20958. Up to 2811 conditions per place. [2024-06-28 00:04:43,424 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 212 selfloop transitions, 71 changer transitions 0/291 dead transitions. [2024-06-28 00:04:43,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 291 transitions, 4470 flow [2024-06-28 00:04:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:43,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:43,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 00:04:43,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-28 00:04:43,425 INFO L175 Difference]: Start difference. First operand has 239 places, 273 transitions, 3715 flow. Second operand 7 states and 155 transitions. [2024-06-28 00:04:43,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 291 transitions, 4470 flow [2024-06-28 00:04:43,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 291 transitions, 4368 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 00:04:43,836 INFO L231 Difference]: Finished difference. Result has 243 places, 276 transitions, 3826 flow [2024-06-28 00:04:43,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3613, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3826, PETRI_PLACES=243, PETRI_TRANSITIONS=276} [2024-06-28 00:04:43,837 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-28 00:04:43,837 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 276 transitions, 3826 flow [2024-06-28 00:04:43,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:43,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:43,837 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 00:04:43,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:04:43,837 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:43,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:43,838 INFO L85 PathProgramCache]: Analyzing trace with hash -735205252, now seen corresponding path program 5 times [2024-06-28 00:04:43,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:43,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486654003] [2024-06-28 00:04:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:43,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:43,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:44,239 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 00:04:44,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:44,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486654003] [2024-06-28 00:04:44,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486654003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:44,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:44,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:44,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492355668] [2024-06-28 00:04:44,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:44,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:44,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:44,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:44,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:44,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:44,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 276 transitions, 3826 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:44,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:44,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:44,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:44,985 INFO L124 PetriNetUnfolderBase]: 1985/3587 cut-off events. [2024-06-28 00:04:44,985 INFO L125 PetriNetUnfolderBase]: For 120539/120539 co-relation queries the response was YES. [2024-06-28 00:04:45,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22223 conditions, 3587 events. 1985/3587 cut-off events. For 120539/120539 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 25612 event pairs, 338 based on Foata normal form. 2/3530 useless extension candidates. Maximal degree in co-relation 22111. Up to 2754 conditions per place. [2024-06-28 00:04:45,029 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 222 selfloop transitions, 67 changer transitions 0/297 dead transitions. [2024-06-28 00:04:45,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 297 transitions, 4668 flow [2024-06-28 00:04:45,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:45,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:45,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-06-28 00:04:45,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 00:04:45,031 INFO L175 Difference]: Start difference. First operand has 243 places, 276 transitions, 3826 flow. Second operand 6 states and 140 transitions. [2024-06-28 00:04:45,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 297 transitions, 4668 flow [2024-06-28 00:04:45,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 297 transitions, 4486 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:45,434 INFO L231 Difference]: Finished difference. Result has 244 places, 280 transitions, 3918 flow [2024-06-28 00:04:45,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3918, PETRI_PLACES=244, PETRI_TRANSITIONS=280} [2024-06-28 00:04:45,435 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-28 00:04:45,435 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 280 transitions, 3918 flow [2024-06-28 00:04:45,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:45,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:45,436 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 00:04:45,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:04:45,436 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:45,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:45,437 INFO L85 PathProgramCache]: Analyzing trace with hash 396018715, now seen corresponding path program 9 times [2024-06-28 00:04:45,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:45,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672481158] [2024-06-28 00:04:45,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:45,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:45,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:45,969 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 00:04:45,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:45,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672481158] [2024-06-28 00:04:45,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672481158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:45,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:45,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:45,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7365309] [2024-06-28 00:04:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:45,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:45,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:46,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:46,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 280 transitions, 3918 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:46,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:46,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:46,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:46,690 INFO L124 PetriNetUnfolderBase]: 2011/3629 cut-off events. [2024-06-28 00:04:46,690 INFO L125 PetriNetUnfolderBase]: For 130151/130151 co-relation queries the response was YES. [2024-06-28 00:04:46,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22851 conditions, 3629 events. 2011/3629 cut-off events. For 130151/130151 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 26020 event pairs, 347 based on Foata normal form. 3/3573 useless extension candidates. Maximal degree in co-relation 22738. Up to 2832 conditions per place. [2024-06-28 00:04:46,731 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 212 selfloop transitions, 87 changer transitions 0/307 dead transitions. [2024-06-28 00:04:46,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 307 transitions, 4942 flow [2024-06-28 00:04:46,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:46,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 00:04:46,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 00:04:46,734 INFO L175 Difference]: Start difference. First operand has 244 places, 280 transitions, 3918 flow. Second operand 7 states and 160 transitions. [2024-06-28 00:04:46,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 307 transitions, 4942 flow [2024-06-28 00:04:47,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 307 transitions, 4841 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 00:04:47,160 INFO L231 Difference]: Finished difference. Result has 248 places, 286 transitions, 4157 flow [2024-06-28 00:04:47,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3821, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4157, PETRI_PLACES=248, PETRI_TRANSITIONS=286} [2024-06-28 00:04:47,160 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-28 00:04:47,161 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 286 transitions, 4157 flow [2024-06-28 00:04:47,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:47,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:47,161 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 00:04:47,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:04:47,161 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:47,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:47,162 INFO L85 PathProgramCache]: Analyzing trace with hash 308632770, now seen corresponding path program 6 times [2024-06-28 00:04:47,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:47,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818461256] [2024-06-28 00:04:47,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:47,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:47,583 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 00:04:47,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:47,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818461256] [2024-06-28 00:04:47,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818461256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:47,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:47,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:47,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991801234] [2024-06-28 00:04:47,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:47,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:47,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:47,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:47,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:47,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:04:47,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 286 transitions, 4157 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:04:47,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:47,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:04:47,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:48,370 INFO L124 PetriNetUnfolderBase]: 2026/3648 cut-off events. [2024-06-28 00:04:48,371 INFO L125 PetriNetUnfolderBase]: For 135989/135989 co-relation queries the response was YES. [2024-06-28 00:04:48,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23312 conditions, 3648 events. 2026/3648 cut-off events. For 135989/135989 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 26154 event pairs, 323 based on Foata normal form. 8/3598 useless extension candidates. Maximal degree in co-relation 23197. Up to 2961 conditions per place. [2024-06-28 00:04:48,414 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 263 selfloop transitions, 35 changer transitions 0/305 dead transitions. [2024-06-28 00:04:48,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 305 transitions, 4919 flow [2024-06-28 00:04:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:48,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 00:04:48,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48928571428571427 [2024-06-28 00:04:48,415 INFO L175 Difference]: Start difference. First operand has 248 places, 286 transitions, 4157 flow. Second operand 7 states and 137 transitions. [2024-06-28 00:04:48,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 305 transitions, 4919 flow [2024-06-28 00:04:48,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 305 transitions, 4751 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-28 00:04:48,884 INFO L231 Difference]: Finished difference. Result has 252 places, 288 transitions, 4145 flow [2024-06-28 00:04:48,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3989, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4145, PETRI_PLACES=252, PETRI_TRANSITIONS=288} [2024-06-28 00:04:48,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-28 00:04:48,885 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 288 transitions, 4145 flow [2024-06-28 00:04:48,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:04:48,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:48,886 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 00:04:48,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:04:48,886 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:48,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:48,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1244110269, now seen corresponding path program 10 times [2024-06-28 00:04:48,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:48,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441334854] [2024-06-28 00:04:48,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:48,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:49,315 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 00:04:49,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:49,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441334854] [2024-06-28 00:04:49,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441334854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:49,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:49,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:49,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207508571] [2024-06-28 00:04:49,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:49,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:49,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:49,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:49,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:49,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:49,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 288 transitions, 4145 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:49,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:49,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:49,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:50,008 INFO L124 PetriNetUnfolderBase]: 2046/3686 cut-off events. [2024-06-28 00:04:50,009 INFO L125 PetriNetUnfolderBase]: For 140340/140340 co-relation queries the response was YES. [2024-06-28 00:04:50,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23595 conditions, 3686 events. 2046/3686 cut-off events. For 140340/140340 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 26487 event pairs, 351 based on Foata normal form. 9/3632 useless extension candidates. Maximal degree in co-relation 23478. Up to 3076 conditions per place. [2024-06-28 00:04:50,053 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 264 selfloop transitions, 35 changer transitions 0/307 dead transitions. [2024-06-28 00:04:50,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 307 transitions, 4898 flow [2024-06-28 00:04:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:50,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-28 00:04:50,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-06-28 00:04:50,054 INFO L175 Difference]: Start difference. First operand has 252 places, 288 transitions, 4145 flow. Second operand 7 states and 151 transitions. [2024-06-28 00:04:50,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 307 transitions, 4898 flow [2024-06-28 00:04:50,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 307 transitions, 4758 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:50,455 INFO L231 Difference]: Finished difference. Result has 253 places, 292 transitions, 4197 flow [2024-06-28 00:04:50,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4005, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4197, PETRI_PLACES=253, PETRI_TRANSITIONS=292} [2024-06-28 00:04:50,456 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-28 00:04:50,456 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 292 transitions, 4197 flow [2024-06-28 00:04:50,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:50,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:50,456 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 00:04:50,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:04:50,456 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:50,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:50,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1421241603, now seen corresponding path program 8 times [2024-06-28 00:04:50,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:50,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22717907] [2024-06-28 00:04:50,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:50,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:50,913 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 00:04:50,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:50,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22717907] [2024-06-28 00:04:50,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22717907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:50,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:50,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:50,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086572507] [2024-06-28 00:04:50,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:50,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:50,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:50,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:50,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:50,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:50,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 292 transitions, 4197 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:50,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:50,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:50,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:51,628 INFO L124 PetriNetUnfolderBase]: 2054/3698 cut-off events. [2024-06-28 00:04:51,628 INFO L125 PetriNetUnfolderBase]: For 131262/131262 co-relation queries the response was YES. [2024-06-28 00:04:51,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23554 conditions, 3698 events. 2054/3698 cut-off events. For 131262/131262 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 26535 event pairs, 355 based on Foata normal form. 2/3639 useless extension candidates. Maximal degree in co-relation 23439. Up to 3070 conditions per place. [2024-06-28 00:04:51,668 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 250 selfloop transitions, 49 changer transitions 0/307 dead transitions. [2024-06-28 00:04:51,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 307 transitions, 4985 flow [2024-06-28 00:04:51,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:51,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 00:04:51,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 00:04:51,670 INFO L175 Difference]: Start difference. First operand has 253 places, 292 transitions, 4197 flow. Second operand 7 states and 150 transitions. [2024-06-28 00:04:51,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 307 transitions, 4985 flow [2024-06-28 00:04:52,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 307 transitions, 4782 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:52,113 INFO L231 Difference]: Finished difference. Result has 254 places, 294 transitions, 4157 flow [2024-06-28 00:04:52,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3994, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4157, PETRI_PLACES=254, PETRI_TRANSITIONS=294} [2024-06-28 00:04:52,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-28 00:04:52,113 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 294 transitions, 4157 flow [2024-06-28 00:04:52,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:52,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:52,114 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 00:04:52,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:04:52,114 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:52,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:52,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1678187986, now seen corresponding path program 7 times [2024-06-28 00:04:52,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:52,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757850149] [2024-06-28 00:04:52,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:52,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:52,508 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 00:04:52,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:52,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757850149] [2024-06-28 00:04:52,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757850149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:52,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:52,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:04:52,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769764264] [2024-06-28 00:04:52,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:52,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:04:52,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:52,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:04:52,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:04:52,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:04:52,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 294 transitions, 4157 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:04:52,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:52,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:04:52,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:53,283 INFO L124 PetriNetUnfolderBase]: 2082/3746 cut-off events. [2024-06-28 00:04:53,284 INFO L125 PetriNetUnfolderBase]: For 141580/141580 co-relation queries the response was YES. [2024-06-28 00:04:53,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24002 conditions, 3746 events. 2082/3746 cut-off events. For 141580/141580 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 26915 event pairs, 326 based on Foata normal form. 2/3690 useless extension candidates. Maximal degree in co-relation 23886. Up to 2938 conditions per place. [2024-06-28 00:04:53,323 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 250 selfloop transitions, 57 changer transitions 0/314 dead transitions. [2024-06-28 00:04:53,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 314 transitions, 5095 flow [2024-06-28 00:04:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 00:04:53,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-06-28 00:04:53,325 INFO L175 Difference]: Start difference. First operand has 254 places, 294 transitions, 4157 flow. Second operand 7 states and 138 transitions. [2024-06-28 00:04:53,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 314 transitions, 5095 flow [2024-06-28 00:04:53,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 314 transitions, 4922 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 00:04:53,746 INFO L231 Difference]: Finished difference. Result has 257 places, 298 transitions, 4302 flow [2024-06-28 00:04:53,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3984, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4302, PETRI_PLACES=257, PETRI_TRANSITIONS=298} [2024-06-28 00:04:53,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-28 00:04:53,747 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 298 transitions, 4302 flow [2024-06-28 00:04:53,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:04:53,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:53,747 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 00:04:53,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:04:53,748 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:53,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1266668563, now seen corresponding path program 9 times [2024-06-28 00:04:53,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:53,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910176366] [2024-06-28 00:04:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:53,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:54,196 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 00:04:54,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:54,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910176366] [2024-06-28 00:04:54,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910176366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:54,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:54,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:54,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053506799] [2024-06-28 00:04:54,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:54,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:54,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:54,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:54,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:54,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:54,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 298 transitions, 4302 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:54,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:54,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:54,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:54,940 INFO L124 PetriNetUnfolderBase]: 2077/3739 cut-off events. [2024-06-28 00:04:54,941 INFO L125 PetriNetUnfolderBase]: For 143498/143498 co-relation queries the response was YES. [2024-06-28 00:04:54,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24065 conditions, 3739 events. 2077/3739 cut-off events. For 143498/143498 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 26885 event pairs, 362 based on Foata normal form. 2/3679 useless extension candidates. Maximal degree in co-relation 23947. Up to 3152 conditions per place. [2024-06-28 00:04:54,984 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 270 selfloop transitions, 33 changer transitions 0/311 dead transitions. [2024-06-28 00:04:54,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 311 transitions, 4936 flow [2024-06-28 00:04:54,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:04:54,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:04:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-06-28 00:04:54,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5321428571428571 [2024-06-28 00:04:54,985 INFO L175 Difference]: Start difference. First operand has 257 places, 298 transitions, 4302 flow. Second operand 7 states and 149 transitions. [2024-06-28 00:04:54,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 311 transitions, 4936 flow [2024-06-28 00:04:55,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 311 transitions, 4817 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:55,486 INFO L231 Difference]: Finished difference. Result has 260 places, 298 transitions, 4254 flow [2024-06-28 00:04:55,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4183, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4254, PETRI_PLACES=260, PETRI_TRANSITIONS=298} [2024-06-28 00:04:55,486 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-28 00:04:55,486 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 298 transitions, 4254 flow [2024-06-28 00:04:55,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:55,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:55,487 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 00:04:55,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:04:55,487 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:55,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:55,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1244110486, now seen corresponding path program 8 times [2024-06-28 00:04:55,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:55,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565776851] [2024-06-28 00:04:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:55,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:55,853 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 00:04:55,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:55,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565776851] [2024-06-28 00:04:55,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565776851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:55,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:55,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:55,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318157224] [2024-06-28 00:04:55,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:55,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:55,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:55,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:55,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 298 transitions, 4254 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:55,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:55,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:55,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:56,553 INFO L124 PetriNetUnfolderBase]: 2077/3741 cut-off events. [2024-06-28 00:04:56,553 INFO L125 PetriNetUnfolderBase]: For 141823/141823 co-relation queries the response was YES. [2024-06-28 00:04:56,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23836 conditions, 3741 events. 2077/3741 cut-off events. For 141823/141823 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 26942 event pairs, 358 based on Foata normal form. 6/3685 useless extension candidates. Maximal degree in co-relation 23718. Up to 3136 conditions per place. [2024-06-28 00:04:56,598 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 273 selfloop transitions, 31 changer transitions 0/312 dead transitions. [2024-06-28 00:04:56,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 312 transitions, 4956 flow [2024-06-28 00:04:56,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 00:04:56,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 00:04:56,599 INFO L175 Difference]: Start difference. First operand has 260 places, 298 transitions, 4254 flow. Second operand 6 states and 132 transitions. [2024-06-28 00:04:56,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 312 transitions, 4956 flow [2024-06-28 00:04:57,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 312 transitions, 4835 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 00:04:57,091 INFO L231 Difference]: Finished difference. Result has 260 places, 300 transitions, 4276 flow [2024-06-28 00:04:57,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4133, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4276, PETRI_PLACES=260, PETRI_TRANSITIONS=300} [2024-06-28 00:04:57,092 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-28 00:04:57,092 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 300 transitions, 4276 flow [2024-06-28 00:04:57,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:57,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:57,093 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 00:04:57,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:04:57,093 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:57,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:57,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1421687476, now seen corresponding path program 9 times [2024-06-28 00:04:57,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:57,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381411109] [2024-06-28 00:04:57,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:57,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:57,460 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 00:04:57,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:57,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381411109] [2024-06-28 00:04:57,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381411109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:57,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:57,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:57,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960717290] [2024-06-28 00:04:57,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:57,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:57,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:57,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:57,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:57,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:57,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 300 transitions, 4276 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:57,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:57,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:57,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:04:58,232 INFO L124 PetriNetUnfolderBase]: 2072/3736 cut-off events. [2024-06-28 00:04:58,232 INFO L125 PetriNetUnfolderBase]: For 137643/137643 co-relation queries the response was YES. [2024-06-28 00:04:58,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23679 conditions, 3736 events. 2072/3736 cut-off events. For 137643/137643 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 26910 event pairs, 353 based on Foata normal form. 2/3676 useless extension candidates. Maximal degree in co-relation 23560. Up to 3057 conditions per place. [2024-06-28 00:04:58,272 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 258 selfloop transitions, 46 changer transitions 0/312 dead transitions. [2024-06-28 00:04:58,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 312 transitions, 4910 flow [2024-06-28 00:04:58,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:04:58,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:04:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 00:04:58,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541666666666667 [2024-06-28 00:04:58,273 INFO L175 Difference]: Start difference. First operand has 260 places, 300 transitions, 4276 flow. Second operand 6 states and 133 transitions. [2024-06-28 00:04:58,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 312 transitions, 4910 flow [2024-06-28 00:04:58,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 312 transitions, 4787 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-28 00:04:58,718 INFO L231 Difference]: Finished difference. Result has 262 places, 300 transitions, 4253 flow [2024-06-28 00:04:58,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4153, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4253, PETRI_PLACES=262, PETRI_TRANSITIONS=300} [2024-06-28 00:04:58,719 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-28 00:04:58,719 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 300 transitions, 4253 flow [2024-06-28 00:04:58,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:58,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:04:58,719 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 00:04:58,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:04:58,720 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:04:58,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:04:58,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1421241789, now seen corresponding path program 11 times [2024-06-28 00:04:58,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:04:58,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137776218] [2024-06-28 00:04:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:04:58,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:04:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:04:59,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:04:59,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:04:59,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137776218] [2024-06-28 00:04:59,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137776218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:04:59,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:04:59,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:04:59,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131446934] [2024-06-28 00:04:59,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:04:59,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:04:59,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:04:59,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:04:59,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:04:59,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:04:59,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 300 transitions, 4253 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:04:59,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:04:59,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:04:59,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:00,036 INFO L124 PetriNetUnfolderBase]: 2085/3753 cut-off events. [2024-06-28 00:05:00,036 INFO L125 PetriNetUnfolderBase]: For 141246/141246 co-relation queries the response was YES. [2024-06-28 00:05:00,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23802 conditions, 3753 events. 2085/3753 cut-off events. For 141246/141246 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 26982 event pairs, 359 based on Foata normal form. 3/3694 useless extension candidates. Maximal degree in co-relation 23682. Up to 3133 conditions per place. [2024-06-28 00:05:00,073 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 259 selfloop transitions, 50 changer transitions 0/317 dead transitions. [2024-06-28 00:05:00,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 317 transitions, 5034 flow [2024-06-28 00:05:00,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:05:00,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:05:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 00:05:00,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 00:05:00,074 INFO L175 Difference]: Start difference. First operand has 262 places, 300 transitions, 4253 flow. Second operand 7 states and 150 transitions. [2024-06-28 00:05:00,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 317 transitions, 5034 flow [2024-06-28 00:05:00,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 317 transitions, 4867 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:00,520 INFO L231 Difference]: Finished difference. Result has 264 places, 304 transitions, 4319 flow [2024-06-28 00:05:00,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4086, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4319, PETRI_PLACES=264, PETRI_TRANSITIONS=304} [2024-06-28 00:05:00,521 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-28 00:05:00,521 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 304 transitions, 4319 flow [2024-06-28 00:05:00,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:05:00,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:00,521 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 00:05:00,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:05:00,522 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:00,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:00,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1421478939, now seen corresponding path program 12 times [2024-06-28 00:05:00,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:00,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270635097] [2024-06-28 00:05:00,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:00,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:01,023 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 00:05:01,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:01,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270635097] [2024-06-28 00:05:01,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270635097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:01,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:01,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:05:01,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137085238] [2024-06-28 00:05:01,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:01,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:05:01,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:01,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:05:01,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:05:01,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:01,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 304 transitions, 4319 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:05:01,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:01,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:01,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:01,769 INFO L124 PetriNetUnfolderBase]: 2090/3759 cut-off events. [2024-06-28 00:05:01,770 INFO L125 PetriNetUnfolderBase]: For 144619/144619 co-relation queries the response was YES. [2024-06-28 00:05:01,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23872 conditions, 3759 events. 2090/3759 cut-off events. For 144619/144619 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 27038 event pairs, 353 based on Foata normal form. 3/3700 useless extension candidates. Maximal degree in co-relation 23751. Up to 3047 conditions per place. [2024-06-28 00:05:01,816 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 250 selfloop transitions, 64 changer transitions 0/322 dead transitions. [2024-06-28 00:05:01,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 322 transitions, 5083 flow [2024-06-28 00:05:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:05:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:05:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 00:05:01,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464285714285714 [2024-06-28 00:05:01,818 INFO L175 Difference]: Start difference. First operand has 264 places, 304 transitions, 4319 flow. Second operand 7 states and 153 transitions. [2024-06-28 00:05:01,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 322 transitions, 5083 flow [2024-06-28 00:05:02,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 322 transitions, 4850 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:02,298 INFO L231 Difference]: Finished difference. Result has 266 places, 306 transitions, 4305 flow [2024-06-28 00:05:02,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4098, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4305, PETRI_PLACES=266, PETRI_TRANSITIONS=306} [2024-06-28 00:05:02,299 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 225 predicate places. [2024-06-28 00:05:02,299 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 306 transitions, 4305 flow [2024-06-28 00:05:02,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 00:05:02,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:02,300 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 00:05:02,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:05:02,300 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:02,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:02,300 INFO L85 PathProgramCache]: Analyzing trace with hash 276247378, now seen corresponding path program 10 times [2024-06-28 00:05:02,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:02,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704580705] [2024-06-28 00:05:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:02,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:02,717 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 00:05:02,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:02,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704580705] [2024-06-28 00:05:02,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704580705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:02,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:02,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:02,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639498239] [2024-06-28 00:05:02,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:02,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:02,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:02,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:02,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:02,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:05:02,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 306 transitions, 4305 flow. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:05:02,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:02,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:05:02,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:03,515 INFO L124 PetriNetUnfolderBase]: 2077/3746 cut-off events. [2024-06-28 00:05:03,515 INFO L125 PetriNetUnfolderBase]: For 143244/143244 co-relation queries the response was YES. [2024-06-28 00:05:03,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23318 conditions, 3746 events. 2077/3746 cut-off events. For 143244/143244 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 27037 event pairs, 340 based on Foata normal form. 6/3689 useless extension candidates. Maximal degree in co-relation 23195. Up to 3032 conditions per place. [2024-06-28 00:05:03,561 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 268 selfloop transitions, 44 changer transitions 0/319 dead transitions. [2024-06-28 00:05:03,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 319 transitions, 4999 flow [2024-06-28 00:05:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:05:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:05:03,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 00:05:03,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5041666666666667 [2024-06-28 00:05:03,562 INFO L175 Difference]: Start difference. First operand has 266 places, 306 transitions, 4305 flow. Second operand 6 states and 121 transitions. [2024-06-28 00:05:03,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 319 transitions, 4999 flow [2024-06-28 00:05:04,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 319 transitions, 4736 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:04,113 INFO L231 Difference]: Finished difference. Result has 267 places, 306 transitions, 4159 flow [2024-06-28 00:05:04,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4042, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4159, PETRI_PLACES=267, PETRI_TRANSITIONS=306} [2024-06-28 00:05:04,114 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-28 00:05:04,114 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 306 transitions, 4159 flow [2024-06-28 00:05:04,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 8 states have internal predecessors, (111), 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 00:05:04,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:04,114 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 00:05:04,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:05:04,115 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:04,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:04,115 INFO L85 PathProgramCache]: Analyzing trace with hash 248327833, now seen corresponding path program 1 times [2024-06-28 00:05:04,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:04,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821900011] [2024-06-28 00:05:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:04,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:05,120 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 00:05:05,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:05,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821900011] [2024-06-28 00:05:05,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821900011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:05,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:05,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:05,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139274495] [2024-06-28 00:05:05,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:05,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:05,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:05,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:05,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:05,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:05,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 306 transitions, 4159 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:05,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:05,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:05,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:06,316 INFO L124 PetriNetUnfolderBase]: 2279/4126 cut-off events. [2024-06-28 00:05:06,317 INFO L125 PetriNetUnfolderBase]: For 223185/223185 co-relation queries the response was YES. [2024-06-28 00:05:06,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26628 conditions, 4126 events. 2279/4126 cut-off events. For 223185/223185 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 30309 event pairs, 363 based on Foata normal form. 24/4086 useless extension candidates. Maximal degree in co-relation 26504. Up to 2792 conditions per place. [2024-06-28 00:05:06,370 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 283 selfloop transitions, 64 changer transitions 2/357 dead transitions. [2024-06-28 00:05:06,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 357 transitions, 5445 flow [2024-06-28 00:05:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-06-28 00:05:06,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-28 00:05:06,371 INFO L175 Difference]: Start difference. First operand has 267 places, 306 transitions, 4159 flow. Second operand 10 states and 230 transitions. [2024-06-28 00:05:06,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 357 transitions, 5445 flow [2024-06-28 00:05:06,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 357 transitions, 5343 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:06,927 INFO L231 Difference]: Finished difference. Result has 273 places, 315 transitions, 4422 flow [2024-06-28 00:05:06,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4057, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4422, PETRI_PLACES=273, PETRI_TRANSITIONS=315} [2024-06-28 00:05:06,928 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-06-28 00:05:06,928 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 315 transitions, 4422 flow [2024-06-28 00:05:06,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:06,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:06,929 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 00:05:06,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:05:06,929 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:06,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1353987017, now seen corresponding path program 2 times [2024-06-28 00:05:06,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:06,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332894150] [2024-06-28 00:05:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:08,001 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 00:05:08,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:08,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332894150] [2024-06-28 00:05:08,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332894150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:08,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:08,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:08,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312713645] [2024-06-28 00:05:08,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:08,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:08,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:08,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:08,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:05:08,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 315 transitions, 4422 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:05:08,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:08,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:05:08,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:09,056 INFO L124 PetriNetUnfolderBase]: 2215/4028 cut-off events. [2024-06-28 00:05:09,056 INFO L125 PetriNetUnfolderBase]: For 190311/190311 co-relation queries the response was YES. [2024-06-28 00:05:09,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24682 conditions, 4028 events. 2215/4028 cut-off events. For 190311/190311 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 29627 event pairs, 329 based on Foata normal form. 32/3998 useless extension candidates. Maximal degree in co-relation 24556. Up to 2776 conditions per place. [2024-06-28 00:05:09,261 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 273 selfloop transitions, 63 changer transitions 3/346 dead transitions. [2024-06-28 00:05:09,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 346 transitions, 5214 flow [2024-06-28 00:05:09,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:09,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-28 00:05:09,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5361111111111111 [2024-06-28 00:05:09,262 INFO L175 Difference]: Start difference. First operand has 273 places, 315 transitions, 4422 flow. Second operand 9 states and 193 transitions. [2024-06-28 00:05:09,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 346 transitions, 5214 flow [2024-06-28 00:05:09,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 346 transitions, 4999 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:09,870 INFO L231 Difference]: Finished difference. Result has 278 places, 315 transitions, 4361 flow [2024-06-28 00:05:09,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4207, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4361, PETRI_PLACES=278, PETRI_TRANSITIONS=315} [2024-06-28 00:05:09,872 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 237 predicate places. [2024-06-28 00:05:09,872 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 315 transitions, 4361 flow [2024-06-28 00:05:09,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:05:09,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:09,872 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 00:05:09,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:05:09,873 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:09,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:09,873 INFO L85 PathProgramCache]: Analyzing trace with hash 396027798, now seen corresponding path program 1 times [2024-06-28 00:05:09,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:09,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614372338] [2024-06-28 00:05:09,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:09,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:10,834 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 00:05:10,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:10,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614372338] [2024-06-28 00:05:10,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614372338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:10,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:10,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:10,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531470209] [2024-06-28 00:05:10,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:10,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:10,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:10,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:10,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 315 transitions, 4361 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:10,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:10,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:10,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:11,832 INFO L124 PetriNetUnfolderBase]: 2217/4042 cut-off events. [2024-06-28 00:05:11,832 INFO L125 PetriNetUnfolderBase]: For 148724/148724 co-relation queries the response was YES. [2024-06-28 00:05:11,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24061 conditions, 4042 events. 2217/4042 cut-off events. For 148724/148724 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 29867 event pairs, 531 based on Foata normal form. 14/4001 useless extension candidates. Maximal degree in co-relation 23933. Up to 3414 conditions per place. [2024-06-28 00:05:11,884 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 301 selfloop transitions, 27 changer transitions 0/336 dead transitions. [2024-06-28 00:05:11,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 336 transitions, 5123 flow [2024-06-28 00:05:11,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:05:11,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:05:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-06-28 00:05:11,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-06-28 00:05:11,886 INFO L175 Difference]: Start difference. First operand has 278 places, 315 transitions, 4361 flow. Second operand 7 states and 156 transitions. [2024-06-28 00:05:11,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 336 transitions, 5123 flow [2024-06-28 00:05:12,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 336 transitions, 4986 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:05:12,473 INFO L231 Difference]: Finished difference. Result has 276 places, 316 transitions, 4314 flow [2024-06-28 00:05:12,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4224, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4314, PETRI_PLACES=276, PETRI_TRANSITIONS=316} [2024-06-28 00:05:12,474 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-28 00:05:12,474 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 316 transitions, 4314 flow [2024-06-28 00:05:12,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:12,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:12,474 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 00:05:12,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:05:12,475 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:12,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:12,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1351380510, now seen corresponding path program 2 times [2024-06-28 00:05:12,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:12,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493330990] [2024-06-28 00:05:12,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:12,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:13,196 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 00:05:13,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:13,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493330990] [2024-06-28 00:05:13,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493330990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:13,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:13,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:13,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146478643] [2024-06-28 00:05:13,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:13,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:13,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:13,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:13,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:05:13,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 316 transitions, 4314 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:05:13,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:13,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:05:13,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:14,038 INFO L124 PetriNetUnfolderBase]: 2237/4073 cut-off events. [2024-06-28 00:05:14,038 INFO L125 PetriNetUnfolderBase]: For 133762/133762 co-relation queries the response was YES. [2024-06-28 00:05:14,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24039 conditions, 4073 events. 2237/4073 cut-off events. For 133762/133762 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 30132 event pairs, 528 based on Foata normal form. 6/4022 useless extension candidates. Maximal degree in co-relation 23911. Up to 3456 conditions per place. [2024-06-28 00:05:14,092 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 305 selfloop transitions, 23 changer transitions 0/335 dead transitions. [2024-06-28 00:05:14,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 335 transitions, 5083 flow [2024-06-28 00:05:14,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:14,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 00:05:14,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.471875 [2024-06-28 00:05:14,093 INFO L175 Difference]: Start difference. First operand has 276 places, 316 transitions, 4314 flow. Second operand 8 states and 151 transitions. [2024-06-28 00:05:14,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 335 transitions, 5083 flow [2024-06-28 00:05:14,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 335 transitions, 5011 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:14,774 INFO L231 Difference]: Finished difference. Result has 279 places, 317 transitions, 4325 flow [2024-06-28 00:05:14,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4242, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4325, PETRI_PLACES=279, PETRI_TRANSITIONS=317} [2024-06-28 00:05:14,775 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 00:05:14,775 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 317 transitions, 4325 flow [2024-06-28 00:05:14,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:05:14,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:14,775 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 00:05:14,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:05:14,775 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:14,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:14,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1421695412, now seen corresponding path program 3 times [2024-06-28 00:05:14,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:14,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137641870] [2024-06-28 00:05:14,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:14,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:15,376 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 00:05:15,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:15,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137641870] [2024-06-28 00:05:15,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137641870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:15,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:15,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:15,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948991053] [2024-06-28 00:05:15,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:15,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:15,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:15,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:15,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:15,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:15,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 317 transitions, 4325 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:15,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:15,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:15,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:16,165 INFO L124 PetriNetUnfolderBase]: 2224/4052 cut-off events. [2024-06-28 00:05:16,166 INFO L125 PetriNetUnfolderBase]: For 124843/124843 co-relation queries the response was YES. [2024-06-28 00:05:16,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23470 conditions, 4052 events. 2224/4052 cut-off events. For 124843/124843 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 29971 event pairs, 543 based on Foata normal form. 6/4003 useless extension candidates. Maximal degree in co-relation 23341. Up to 3445 conditions per place. [2024-06-28 00:05:16,215 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 307 selfloop transitions, 19 changer transitions 0/334 dead transitions. [2024-06-28 00:05:16,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 334 transitions, 5060 flow [2024-06-28 00:05:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:05:16,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:05:16,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 00:05:16,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 00:05:16,216 INFO L175 Difference]: Start difference. First operand has 279 places, 317 transitions, 4325 flow. Second operand 7 states and 150 transitions. [2024-06-28 00:05:16,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 334 transitions, 5060 flow [2024-06-28 00:05:16,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 334 transitions, 4994 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:16,753 INFO L231 Difference]: Finished difference. Result has 279 places, 317 transitions, 4304 flow [2024-06-28 00:05:16,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4259, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4304, PETRI_PLACES=279, PETRI_TRANSITIONS=317} [2024-06-28 00:05:16,754 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 00:05:16,754 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 317 transitions, 4304 flow [2024-06-28 00:05:16,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:16,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:16,755 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 00:05:16,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:05:16,755 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:16,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:16,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1956620295, now seen corresponding path program 1 times [2024-06-28 00:05:16,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:16,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443322925] [2024-06-28 00:05:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:16,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:17,601 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 00:05:17,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:17,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443322925] [2024-06-28 00:05:17,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443322925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:17,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:17,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:17,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916006884] [2024-06-28 00:05:17,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:17,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:17,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:17,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:17,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:17,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:17,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 317 transitions, 4304 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:17,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:17,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:17,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:18,663 INFO L124 PetriNetUnfolderBase]: 2298/4163 cut-off events. [2024-06-28 00:05:18,663 INFO L125 PetriNetUnfolderBase]: For 143614/143614 co-relation queries the response was YES. [2024-06-28 00:05:18,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25027 conditions, 4163 events. 2298/4163 cut-off events. For 143614/143614 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 30646 event pairs, 358 based on Foata normal form. 2/4113 useless extension candidates. Maximal degree in co-relation 24899. Up to 3054 conditions per place. [2024-06-28 00:05:18,715 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 257 selfloop transitions, 89 changer transitions 0/354 dead transitions. [2024-06-28 00:05:18,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 354 transitions, 5497 flow [2024-06-28 00:05:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-28 00:05:18,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.578125 [2024-06-28 00:05:18,716 INFO L175 Difference]: Start difference. First operand has 279 places, 317 transitions, 4304 flow. Second operand 8 states and 185 transitions. [2024-06-28 00:05:18,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 354 transitions, 5497 flow [2024-06-28 00:05:19,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 354 transitions, 5386 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 00:05:19,306 INFO L231 Difference]: Finished difference. Result has 281 places, 323 transitions, 4590 flow [2024-06-28 00:05:19,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4193, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4590, PETRI_PLACES=281, PETRI_TRANSITIONS=323} [2024-06-28 00:05:19,307 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-28 00:05:19,307 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 323 transitions, 4590 flow [2024-06-28 00:05:19,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:19,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:19,307 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 00:05:19,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:05:19,308 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:19,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash 348079136, now seen corresponding path program 1 times [2024-06-28 00:05:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:19,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807497243] [2024-06-28 00:05:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:19,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:19,917 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 00:05:19,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:19,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807497243] [2024-06-28 00:05:19,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807497243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:19,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:19,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:19,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873704848] [2024-06-28 00:05:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:19,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:19,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:19,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:19,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:19,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:19,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 323 transitions, 4590 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:19,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:19,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:19,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:20,969 INFO L124 PetriNetUnfolderBase]: 2567/4652 cut-off events. [2024-06-28 00:05:20,970 INFO L125 PetriNetUnfolderBase]: For 260293/260293 co-relation queries the response was YES. [2024-06-28 00:05:21,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30318 conditions, 4652 events. 2567/4652 cut-off events. For 260293/260293 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 34999 event pairs, 424 based on Foata normal form. 27/4615 useless extension candidates. Maximal degree in co-relation 30190. Up to 2815 conditions per place. [2024-06-28 00:05:21,033 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 267 selfloop transitions, 89 changer transitions 4/368 dead transitions. [2024-06-28 00:05:21,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 368 transitions, 5807 flow [2024-06-28 00:05:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:21,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-28 00:05:21,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-28 00:05:21,035 INFO L175 Difference]: Start difference. First operand has 281 places, 323 transitions, 4590 flow. Second operand 8 states and 190 transitions. [2024-06-28 00:05:21,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 368 transitions, 5807 flow [2024-06-28 00:05:21,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 368 transitions, 5672 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-28 00:05:21,895 INFO L231 Difference]: Finished difference. Result has 288 places, 327 transitions, 4760 flow [2024-06-28 00:05:21,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4455, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4760, PETRI_PLACES=288, PETRI_TRANSITIONS=327} [2024-06-28 00:05:21,896 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-28 00:05:21,896 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 327 transitions, 4760 flow [2024-06-28 00:05:21,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:21,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:21,897 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 00:05:21,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:05:21,897 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:21,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:21,897 INFO L85 PathProgramCache]: Analyzing trace with hash 767131809, now seen corresponding path program 2 times [2024-06-28 00:05:21,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:21,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058278434] [2024-06-28 00:05:21,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:21,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:22,747 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 00:05:22,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:22,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058278434] [2024-06-28 00:05:22,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058278434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:22,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:22,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:22,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298836635] [2024-06-28 00:05:22,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:22,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:22,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:22,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:22,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:22,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:22,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 327 transitions, 4760 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:22,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:22,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:22,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:23,837 INFO L124 PetriNetUnfolderBase]: 2385/4313 cut-off events. [2024-06-28 00:05:23,838 INFO L125 PetriNetUnfolderBase]: For 232908/232908 co-relation queries the response was YES. [2024-06-28 00:05:23,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29518 conditions, 4313 events. 2385/4313 cut-off events. For 232908/232908 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 31974 event pairs, 440 based on Foata normal form. 6/4261 useless extension candidates. Maximal degree in co-relation 29387. Up to 3430 conditions per place. [2024-06-28 00:05:23,891 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 290 selfloop transitions, 60 changer transitions 0/358 dead transitions. [2024-06-28 00:05:23,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 358 transitions, 5764 flow [2024-06-28 00:05:23,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:23,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 00:05:23,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-06-28 00:05:23,907 INFO L175 Difference]: Start difference. First operand has 288 places, 327 transitions, 4760 flow. Second operand 8 states and 182 transitions. [2024-06-28 00:05:23,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 358 transitions, 5764 flow [2024-06-28 00:05:24,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 358 transitions, 5630 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:24,949 INFO L231 Difference]: Finished difference. Result has 291 places, 329 transitions, 4812 flow [2024-06-28 00:05:24,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4628, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4812, PETRI_PLACES=291, PETRI_TRANSITIONS=329} [2024-06-28 00:05:24,950 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-28 00:05:24,950 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 329 transitions, 4812 flow [2024-06-28 00:05:24,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:24,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:24,950 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 00:05:24,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:05:24,951 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:24,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:24,951 INFO L85 PathProgramCache]: Analyzing trace with hash 772822479, now seen corresponding path program 3 times [2024-06-28 00:05:24,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:24,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257910020] [2024-06-28 00:05:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:24,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:25,925 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 00:05:25,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:25,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257910020] [2024-06-28 00:05:25,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257910020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:25,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:25,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:25,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963776058] [2024-06-28 00:05:25,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:25,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:25,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:25,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:25,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:25,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:25,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 329 transitions, 4812 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:25,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:25,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:25,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:27,110 INFO L124 PetriNetUnfolderBase]: 2425/4387 cut-off events. [2024-06-28 00:05:27,111 INFO L125 PetriNetUnfolderBase]: For 237836/237836 co-relation queries the response was YES. [2024-06-28 00:05:27,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29936 conditions, 4387 events. 2425/4387 cut-off events. For 237836/237836 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 32511 event pairs, 401 based on Foata normal form. 6/4336 useless extension candidates. Maximal degree in co-relation 29804. Up to 3223 conditions per place. [2024-06-28 00:05:27,164 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 266 selfloop transitions, 88 changer transitions 0/362 dead transitions. [2024-06-28 00:05:27,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 362 transitions, 5972 flow [2024-06-28 00:05:27,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:27,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-06-28 00:05:27,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2024-06-28 00:05:27,165 INFO L175 Difference]: Start difference. First operand has 291 places, 329 transitions, 4812 flow. Second operand 8 states and 184 transitions. [2024-06-28 00:05:27,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 362 transitions, 5972 flow [2024-06-28 00:05:27,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 362 transitions, 5865 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 00:05:27,853 INFO L231 Difference]: Finished difference. Result has 295 places, 332 transitions, 4953 flow [2024-06-28 00:05:27,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4953, PETRI_PLACES=295, PETRI_TRANSITIONS=332} [2024-06-28 00:05:27,856 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-28 00:05:27,857 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 332 transitions, 4953 flow [2024-06-28 00:05:27,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:27,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:27,857 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 00:05:27,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:05:27,857 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:27,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1190270296, now seen corresponding path program 1 times [2024-06-28 00:05:27,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:27,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593938622] [2024-06-28 00:05:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:27,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:28,570 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 00:05:28,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593938622] [2024-06-28 00:05:28,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593938622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:28,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:28,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:28,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926411187] [2024-06-28 00:05:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:28,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:28,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:28,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:28,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:05:28,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 332 transitions, 4953 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:05:28,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:28,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:05:28,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:29,828 INFO L124 PetriNetUnfolderBase]: 2457/4467 cut-off events. [2024-06-28 00:05:29,828 INFO L125 PetriNetUnfolderBase]: For 249796/249796 co-relation queries the response was YES. [2024-06-28 00:05:29,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30970 conditions, 4467 events. 2457/4467 cut-off events. For 249796/249796 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 33462 event pairs, 437 based on Foata normal form. 4/4415 useless extension candidates. Maximal degree in co-relation 30835. Up to 3538 conditions per place. [2024-06-28 00:05:29,898 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 310 selfloop transitions, 46 changer transitions 0/363 dead transitions. [2024-06-28 00:05:29,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 363 transitions, 5947 flow [2024-06-28 00:05:29,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 00:05:29,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222222222222223 [2024-06-28 00:05:29,900 INFO L175 Difference]: Start difference. First operand has 295 places, 332 transitions, 4953 flow. Second operand 9 states and 188 transitions. [2024-06-28 00:05:29,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 363 transitions, 5947 flow [2024-06-28 00:05:30,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 363 transitions, 5803 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 00:05:30,636 INFO L231 Difference]: Finished difference. Result has 300 places, 334 transitions, 4992 flow [2024-06-28 00:05:30,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4809, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4992, PETRI_PLACES=300, PETRI_TRANSITIONS=334} [2024-06-28 00:05:30,636 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 259 predicate places. [2024-06-28 00:05:30,637 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 334 transitions, 4992 flow [2024-06-28 00:05:30,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:05:30,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:30,637 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 00:05:30,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:05:30,637 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:30,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:30,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1951407645, now seen corresponding path program 4 times [2024-06-28 00:05:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:30,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526236520] [2024-06-28 00:05:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:30,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:31,414 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 00:05:31,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:31,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526236520] [2024-06-28 00:05:31,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526236520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:31,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:31,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:31,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603783495] [2024-06-28 00:05:31,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:31,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:31,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:31,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:31,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:31,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:31,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 334 transitions, 4992 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:31,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:31,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:31,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:32,485 INFO L124 PetriNetUnfolderBase]: 2477/4492 cut-off events. [2024-06-28 00:05:32,486 INFO L125 PetriNetUnfolderBase]: For 260346/260346 co-relation queries the response was YES. [2024-06-28 00:05:32,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31088 conditions, 4492 events. 2477/4492 cut-off events. For 260346/260346 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 33728 event pairs, 457 based on Foata normal form. 6/4435 useless extension candidates. Maximal degree in co-relation 30952. Up to 3646 conditions per place. [2024-06-28 00:05:32,547 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 292 selfloop transitions, 58 changer transitions 0/358 dead transitions. [2024-06-28 00:05:32,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 358 transitions, 5796 flow [2024-06-28 00:05:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:32,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 00:05:32,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 00:05:32,548 INFO L175 Difference]: Start difference. First operand has 300 places, 334 transitions, 4992 flow. Second operand 8 states and 176 transitions. [2024-06-28 00:05:32,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 358 transitions, 5796 flow [2024-06-28 00:05:33,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 358 transitions, 5664 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:33,537 INFO L231 Difference]: Finished difference. Result has 302 places, 335 transitions, 5008 flow [2024-06-28 00:05:33,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4860, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5008, PETRI_PLACES=302, PETRI_TRANSITIONS=335} [2024-06-28 00:05:33,537 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-28 00:05:33,537 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 335 transitions, 5008 flow [2024-06-28 00:05:33,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:33,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:33,538 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 00:05:33,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:05:33,538 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:33,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:33,538 INFO L85 PathProgramCache]: Analyzing trace with hash -454964495, now seen corresponding path program 5 times [2024-06-28 00:05:33,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:33,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590562418] [2024-06-28 00:05:33,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:33,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:34,330 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 00:05:34,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:34,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590562418] [2024-06-28 00:05:34,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590562418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:34,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:34,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:34,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457923041] [2024-06-28 00:05:34,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:34,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:34,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:34,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:34,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:34,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:34,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 335 transitions, 5008 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:34,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:34,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:34,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:35,639 INFO L124 PetriNetUnfolderBase]: 2497/4529 cut-off events. [2024-06-28 00:05:35,639 INFO L125 PetriNetUnfolderBase]: For 258762/258762 co-relation queries the response was YES. [2024-06-28 00:05:35,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31256 conditions, 4529 events. 2497/4529 cut-off events. For 258762/258762 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 34077 event pairs, 463 based on Foata normal form. 6/4469 useless extension candidates. Maximal degree in co-relation 31120. Up to 3678 conditions per place. [2024-06-28 00:05:35,701 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 289 selfloop transitions, 59 changer transitions 0/356 dead transitions. [2024-06-28 00:05:35,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 356 transitions, 5802 flow [2024-06-28 00:05:35,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-28 00:05:35,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-06-28 00:05:35,702 INFO L175 Difference]: Start difference. First operand has 302 places, 335 transitions, 5008 flow. Second operand 8 states and 174 transitions. [2024-06-28 00:05:35,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 356 transitions, 5802 flow [2024-06-28 00:05:36,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 356 transitions, 5672 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:36,652 INFO L231 Difference]: Finished difference. Result has 304 places, 336 transitions, 5030 flow [2024-06-28 00:05:36,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4878, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5030, PETRI_PLACES=304, PETRI_TRANSITIONS=336} [2024-06-28 00:05:36,653 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-28 00:05:36,653 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 336 transitions, 5030 flow [2024-06-28 00:05:36,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:36,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:36,653 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 00:05:36,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:05:36,654 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:36,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:36,654 INFO L85 PathProgramCache]: Analyzing trace with hash -209487798, now seen corresponding path program 2 times [2024-06-28 00:05:36,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:36,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248900684] [2024-06-28 00:05:36,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:36,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:37,337 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 00:05:37,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:37,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248900684] [2024-06-28 00:05:37,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248900684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:37,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:37,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:37,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255817815] [2024-06-28 00:05:37,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:37,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:37,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:37,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:37,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:37,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 336 transitions, 5030 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:37,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:37,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:37,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:38,426 INFO L124 PetriNetUnfolderBase]: 2509/4563 cut-off events. [2024-06-28 00:05:38,426 INFO L125 PetriNetUnfolderBase]: For 262238/262238 co-relation queries the response was YES. [2024-06-28 00:05:38,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31450 conditions, 4563 events. 2509/4563 cut-off events. For 262238/262238 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 34386 event pairs, 459 based on Foata normal form. 4/4499 useless extension candidates. Maximal degree in co-relation 31313. Up to 3580 conditions per place. [2024-06-28 00:05:38,482 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 292 selfloop transitions, 57 changer transitions 0/357 dead transitions. [2024-06-28 00:05:38,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 357 transitions, 5934 flow [2024-06-28 00:05:38,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:05:38,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:05:38,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 00:05:38,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5678571428571428 [2024-06-28 00:05:38,483 INFO L175 Difference]: Start difference. First operand has 304 places, 336 transitions, 5030 flow. Second operand 7 states and 159 transitions. [2024-06-28 00:05:38,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 357 transitions, 5934 flow [2024-06-28 00:05:39,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 357 transitions, 5800 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:39,351 INFO L231 Difference]: Finished difference. Result has 305 places, 337 transitions, 5044 flow [2024-06-28 00:05:39,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5044, PETRI_PLACES=305, PETRI_TRANSITIONS=337} [2024-06-28 00:05:39,352 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-28 00:05:39,352 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 337 transitions, 5044 flow [2024-06-28 00:05:39,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:39,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:39,352 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 00:05:39,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:05:39,353 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:39,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash -209482218, now seen corresponding path program 2 times [2024-06-28 00:05:39,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:39,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997524510] [2024-06-28 00:05:39,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:39,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:39,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:39,888 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 00:05:39,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:39,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997524510] [2024-06-28 00:05:39,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997524510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:39,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:39,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:39,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213479727] [2024-06-28 00:05:39,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:39,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:39,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:39,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:39,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:39,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:39,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 337 transitions, 5044 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:39,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:39,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:39,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:40,947 INFO L124 PetriNetUnfolderBase]: 2590/4714 cut-off events. [2024-06-28 00:05:40,948 INFO L125 PetriNetUnfolderBase]: For 323145/323145 co-relation queries the response was YES. [2024-06-28 00:05:40,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32453 conditions, 4714 events. 2590/4714 cut-off events. For 323145/323145 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 35842 event pairs, 522 based on Foata normal form. 27/4665 useless extension candidates. Maximal degree in co-relation 32315. Up to 3677 conditions per place. [2024-06-28 00:05:41,013 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 288 selfloop transitions, 62 changer transitions 4/362 dead transitions. [2024-06-28 00:05:41,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 362 transitions, 5893 flow [2024-06-28 00:05:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 00:05:41,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 00:05:41,014 INFO L175 Difference]: Start difference. First operand has 305 places, 337 transitions, 5044 flow. Second operand 8 states and 180 transitions. [2024-06-28 00:05:41,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 362 transitions, 5893 flow [2024-06-28 00:05:42,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 362 transitions, 5789 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:42,059 INFO L231 Difference]: Finished difference. Result has 308 places, 336 transitions, 5059 flow [2024-06-28 00:05:42,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4940, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5059, PETRI_PLACES=308, PETRI_TRANSITIONS=336} [2024-06-28 00:05:42,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 267 predicate places. [2024-06-28 00:05:42,060 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 336 transitions, 5059 flow [2024-06-28 00:05:42,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:42,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:42,060 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 00:05:42,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:05:42,061 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:42,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:42,061 INFO L85 PathProgramCache]: Analyzing trace with hash -209482435, now seen corresponding path program 6 times [2024-06-28 00:05:42,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:42,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206277936] [2024-06-28 00:05:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:42,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:43,153 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 00:05:43,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:43,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206277936] [2024-06-28 00:05:43,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206277936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:43,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:43,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:43,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873242356] [2024-06-28 00:05:43,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:43,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:43,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:43,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:43,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:05:43,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 336 transitions, 5059 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:05:43,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:43,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:05:43,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:44,387 INFO L124 PetriNetUnfolderBase]: 2554/4660 cut-off events. [2024-06-28 00:05:44,388 INFO L125 PetriNetUnfolderBase]: For 285311/285311 co-relation queries the response was YES. [2024-06-28 00:05:44,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32451 conditions, 4660 events. 2554/4660 cut-off events. For 285311/285311 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 35426 event pairs, 463 based on Foata normal form. 6/4610 useless extension candidates. Maximal degree in co-relation 32312. Up to 3712 conditions per place. [2024-06-28 00:05:44,451 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 306 selfloop transitions, 55 changer transitions 0/368 dead transitions. [2024-06-28 00:05:44,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 368 transitions, 6088 flow [2024-06-28 00:05:44,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:05:44,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:05:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-28 00:05:44,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505 [2024-06-28 00:05:44,452 INFO L175 Difference]: Start difference. First operand has 308 places, 336 transitions, 5059 flow. Second operand 10 states and 202 transitions. [2024-06-28 00:05:44,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 368 transitions, 6088 flow [2024-06-28 00:05:45,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 368 transitions, 5945 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 00:05:45,241 INFO L231 Difference]: Finished difference. Result has 313 places, 339 transitions, 5117 flow [2024-06-28 00:05:45,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4916, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5117, PETRI_PLACES=313, PETRI_TRANSITIONS=339} [2024-06-28 00:05:45,242 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-28 00:05:45,242 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 339 transitions, 5117 flow [2024-06-28 00:05:45,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:05:45,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:45,242 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 00:05:45,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:05:45,242 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:45,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:45,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1961597128, now seen corresponding path program 1 times [2024-06-28 00:05:45,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:45,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554903574] [2024-06-28 00:05:45,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:45,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:45,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:46,080 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 00:05:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:46,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554903574] [2024-06-28 00:05:46,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554903574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:46,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:46,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:46,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230759377] [2024-06-28 00:05:46,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:46,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:46,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:46,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:05:46,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 339 transitions, 5117 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:05:46,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:46,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:05:46,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:47,124 INFO L124 PetriNetUnfolderBase]: 2574/4674 cut-off events. [2024-06-28 00:05:47,124 INFO L125 PetriNetUnfolderBase]: For 292906/292906 co-relation queries the response was YES. [2024-06-28 00:05:47,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32745 conditions, 4674 events. 2574/4674 cut-off events. For 292906/292906 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 35297 event pairs, 508 based on Foata normal form. 6/4614 useless extension candidates. Maximal degree in co-relation 32603. Up to 3796 conditions per place. [2024-06-28 00:05:47,189 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 315 selfloop transitions, 45 changer transitions 0/367 dead transitions. [2024-06-28 00:05:47,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 367 transitions, 5986 flow [2024-06-28 00:05:47,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:05:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:05:47,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 185 transitions. [2024-06-28 00:05:47,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 00:05:47,191 INFO L175 Difference]: Start difference. First operand has 313 places, 339 transitions, 5117 flow. Second operand 9 states and 185 transitions. [2024-06-28 00:05:47,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 367 transitions, 5986 flow [2024-06-28 00:05:48,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 367 transitions, 5891 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 00:05:48,154 INFO L231 Difference]: Finished difference. Result has 318 places, 341 transitions, 5204 flow [2024-06-28 00:05:48,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5022, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5204, PETRI_PLACES=318, PETRI_TRANSITIONS=341} [2024-06-28 00:05:48,155 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-28 00:05:48,155 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 341 transitions, 5204 flow [2024-06-28 00:05:48,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:05:48,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:48,155 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 00:05:48,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:05:48,155 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:48,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:48,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1575566888, now seen corresponding path program 3 times [2024-06-28 00:05:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898427290] [2024-06-28 00:05:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:48,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:48,831 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 00:05:48,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:48,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898427290] [2024-06-28 00:05:48,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898427290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:48,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:48,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:48,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723208172] [2024-06-28 00:05:48,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:48,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:48,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:48,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:48,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:48,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:05:48,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 341 transitions, 5204 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:05:48,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:48,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:05:48,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:50,174 INFO L124 PetriNetUnfolderBase]: 2594/4728 cut-off events. [2024-06-28 00:05:50,175 INFO L125 PetriNetUnfolderBase]: For 296578/296578 co-relation queries the response was YES. [2024-06-28 00:05:50,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33116 conditions, 4728 events. 2594/4728 cut-off events. For 296578/296578 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 36025 event pairs, 503 based on Foata normal form. 4/4665 useless extension candidates. Maximal degree in co-relation 32973. Up to 3946 conditions per place. [2024-06-28 00:05:50,230 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 330 selfloop transitions, 29 changer transitions 0/366 dead transitions. [2024-06-28 00:05:50,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 366 transitions, 6091 flow [2024-06-28 00:05:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:50,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 00:05:50,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.490625 [2024-06-28 00:05:50,232 INFO L175 Difference]: Start difference. First operand has 318 places, 341 transitions, 5204 flow. Second operand 8 states and 157 transitions. [2024-06-28 00:05:50,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 366 transitions, 6091 flow [2024-06-28 00:05:51,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 366 transitions, 5937 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 00:05:51,171 INFO L231 Difference]: Finished difference. Result has 319 places, 344 transitions, 5192 flow [2024-06-28 00:05:51,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5050, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5192, PETRI_PLACES=319, PETRI_TRANSITIONS=344} [2024-06-28 00:05:51,172 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-06-28 00:05:51,172 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 344 transitions, 5192 flow [2024-06-28 00:05:51,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:05:51,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:51,172 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 00:05:51,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:05:51,173 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:51,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:51,173 INFO L85 PathProgramCache]: Analyzing trace with hash 866869960, now seen corresponding path program 2 times [2024-06-28 00:05:51,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:51,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648275882] [2024-06-28 00:05:51,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:51,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:51,801 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 00:05:51,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:51,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648275882] [2024-06-28 00:05:51,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648275882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:51,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:51,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:51,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482324205] [2024-06-28 00:05:51,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:51,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:51,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:51,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:51,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:51,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:05:51,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 344 transitions, 5192 flow. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 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 00:05:51,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:51,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:05:51,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:52,894 INFO L124 PetriNetUnfolderBase]: 2614/4759 cut-off events. [2024-06-28 00:05:52,894 INFO L125 PetriNetUnfolderBase]: For 310361/310361 co-relation queries the response was YES. [2024-06-28 00:05:52,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33318 conditions, 4759 events. 2614/4759 cut-off events. For 310361/310361 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 36287 event pairs, 518 based on Foata normal form. 6/4691 useless extension candidates. Maximal degree in co-relation 33174. Up to 3834 conditions per place. [2024-06-28 00:05:52,969 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 306 selfloop transitions, 50 changer transitions 0/363 dead transitions. [2024-06-28 00:05:52,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 363 transitions, 6106 flow [2024-06-28 00:05:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:05:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:05:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 00:05:52,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-28 00:05:52,971 INFO L175 Difference]: Start difference. First operand has 319 places, 344 transitions, 5192 flow. Second operand 7 states and 144 transitions. [2024-06-28 00:05:52,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 363 transitions, 6106 flow [2024-06-28 00:05:54,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 363 transitions, 6022 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:54,124 INFO L231 Difference]: Finished difference. Result has 321 places, 348 transitions, 5357 flow [2024-06-28 00:05:54,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5108, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5357, PETRI_PLACES=321, PETRI_TRANSITIONS=348} [2024-06-28 00:05:54,125 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-28 00:05:54,125 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 348 transitions, 5357 flow [2024-06-28 00:05:54,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 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 00:05:54,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:54,126 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 00:05:54,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:05:54,126 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:54,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:54,126 INFO L85 PathProgramCache]: Analyzing trace with hash 265976775, now seen corresponding path program 7 times [2024-06-28 00:05:54,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:54,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039245340] [2024-06-28 00:05:54,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:54,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:54,970 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 00:05:54,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039245340] [2024-06-28 00:05:54,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039245340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:54,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:54,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:05:54,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671804487] [2024-06-28 00:05:54,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:54,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:05:54,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:54,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:05:54,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:05:55,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:05:55,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 348 transitions, 5357 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:55,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:55,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:05:55,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:56,032 INFO L124 PetriNetUnfolderBase]: 2601/4728 cut-off events. [2024-06-28 00:05:56,033 INFO L125 PetriNetUnfolderBase]: For 304802/304802 co-relation queries the response was YES. [2024-06-28 00:05:56,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32945 conditions, 4728 events. 2601/4728 cut-off events. For 304802/304802 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 35920 event pairs, 518 based on Foata normal form. 6/4669 useless extension candidates. Maximal degree in co-relation 32801. Up to 3858 conditions per place. [2024-06-28 00:05:56,097 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 308 selfloop transitions, 49 changer transitions 0/365 dead transitions. [2024-06-28 00:05:56,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 365 transitions, 6277 flow [2024-06-28 00:05:56,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:05:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:05:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 00:05:56,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 00:05:56,099 INFO L175 Difference]: Start difference. First operand has 321 places, 348 transitions, 5357 flow. Second operand 7 states and 154 transitions. [2024-06-28 00:05:56,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 365 transitions, 6277 flow [2024-06-28 00:05:57,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 365 transitions, 6102 flow, removed 46 selfloop flow, removed 5 redundant places. [2024-06-28 00:05:57,261 INFO L231 Difference]: Finished difference. Result has 323 places, 348 transitions, 5286 flow [2024-06-28 00:05:57,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5182, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5286, PETRI_PLACES=323, PETRI_TRANSITIONS=348} [2024-06-28 00:05:57,262 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-28 00:05:57,262 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 348 transitions, 5286 flow [2024-06-28 00:05:57,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:05:57,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:05:57,262 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 00:05:57,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:05:57,262 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:05:57,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:05:57,263 INFO L85 PathProgramCache]: Analyzing trace with hash 265983688, now seen corresponding path program 3 times [2024-06-28 00:05:57,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:05:57,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789812483] [2024-06-28 00:05:57,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:05:57,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:05:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:05:57,937 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 00:05:57,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:05:57,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789812483] [2024-06-28 00:05:57,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789812483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:05:57,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:05:57,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:05:57,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000644374] [2024-06-28 00:05:57,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:05:57,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:05:57,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:05:57,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:05:57,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:05:58,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:05:58,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 348 transitions, 5286 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:05:58,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:05:58,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:05:58,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:05:59,123 INFO L124 PetriNetUnfolderBase]: 2621/4775 cut-off events. [2024-06-28 00:05:59,123 INFO L125 PetriNetUnfolderBase]: For 310386/310386 co-relation queries the response was YES. [2024-06-28 00:05:59,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33133 conditions, 4775 events. 2621/4775 cut-off events. For 310386/310386 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 36393 event pairs, 542 based on Foata normal form. 6/4722 useless extension candidates. Maximal degree in co-relation 32988. Up to 3948 conditions per place. [2024-06-28 00:05:59,195 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 327 selfloop transitions, 36 changer transitions 0/370 dead transitions. [2024-06-28 00:05:59,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 370 transitions, 6149 flow [2024-06-28 00:05:59,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:05:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:05:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 00:05:59,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50625 [2024-06-28 00:05:59,197 INFO L175 Difference]: Start difference. First operand has 323 places, 348 transitions, 5286 flow. Second operand 8 states and 162 transitions. [2024-06-28 00:05:59,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 370 transitions, 6149 flow [2024-06-28 00:06:00,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 370 transitions, 6040 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 00:06:00,292 INFO L231 Difference]: Finished difference. Result has 326 places, 350 transitions, 5352 flow [2024-06-28 00:06:00,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5177, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5352, PETRI_PLACES=326, PETRI_TRANSITIONS=350} [2024-06-28 00:06:00,293 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-28 00:06:00,293 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 350 transitions, 5352 flow [2024-06-28 00:06:00,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:06:00,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:00,293 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 00:06:00,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:06:00,299 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:00,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:00,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1583841098, now seen corresponding path program 4 times [2024-06-28 00:06:00,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:00,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223236828] [2024-06-28 00:06:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:00,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:00,952 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 00:06:00,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:00,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223236828] [2024-06-28 00:06:00,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223236828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:00,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:00,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:06:00,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471993124] [2024-06-28 00:06:00,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:00,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:06:00,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:00,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:06:00,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:06:01,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:06:01,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 350 transitions, 5352 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:01,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:01,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:06:01,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:02,177 INFO L124 PetriNetUnfolderBase]: 2613/4763 cut-off events. [2024-06-28 00:06:02,178 INFO L125 PetriNetUnfolderBase]: For 303059/303059 co-relation queries the response was YES. [2024-06-28 00:06:02,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32784 conditions, 4763 events. 2613/4763 cut-off events. For 303059/303059 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 36302 event pairs, 535 based on Foata normal form. 4/4699 useless extension candidates. Maximal degree in co-relation 32639. Up to 3943 conditions per place. [2024-06-28 00:06:02,231 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 317 selfloop transitions, 38 changer transitions 0/363 dead transitions. [2024-06-28 00:06:02,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 363 transitions, 6090 flow [2024-06-28 00:06:02,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:06:02,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:06:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-06-28 00:06:02,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5541666666666667 [2024-06-28 00:06:02,233 INFO L175 Difference]: Start difference. First operand has 326 places, 350 transitions, 5352 flow. Second operand 6 states and 133 transitions. [2024-06-28 00:06:02,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 363 transitions, 6090 flow [2024-06-28 00:06:03,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 363 transitions, 5930 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:03,300 INFO L231 Difference]: Finished difference. Result has 326 places, 350 transitions, 5277 flow [2024-06-28 00:06:03,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5192, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5277, PETRI_PLACES=326, PETRI_TRANSITIONS=350} [2024-06-28 00:06:03,301 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-28 00:06:03,301 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 350 transitions, 5277 flow [2024-06-28 00:06:03,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:03,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:03,301 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 00:06:03,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:06:03,302 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:03,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:03,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1406213626, now seen corresponding path program 3 times [2024-06-28 00:06:03,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:03,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330986493] [2024-06-28 00:06:03,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:03,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:03,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:03,920 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 00:06:03,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:03,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330986493] [2024-06-28 00:06:03,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330986493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:03,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:03,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:06:03,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136612073] [2024-06-28 00:06:03,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:03,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:06:03,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:03,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:06:03,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:06:03,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:06:03,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 350 transitions, 5277 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:03,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:03,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:06:03,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:04,953 INFO L124 PetriNetUnfolderBase]: 2605/4751 cut-off events. [2024-06-28 00:06:04,953 INFO L125 PetriNetUnfolderBase]: For 295620/295620 co-relation queries the response was YES. [2024-06-28 00:06:04,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32241 conditions, 4751 events. 2605/4751 cut-off events. For 295620/295620 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 36256 event pairs, 548 based on Foata normal form. 3/4685 useless extension candidates. Maximal degree in co-relation 32096. Up to 3980 conditions per place. [2024-06-28 00:06:05,016 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 315 selfloop transitions, 44 changer transitions 0/367 dead transitions. [2024-06-28 00:06:05,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 367 transitions, 6124 flow [2024-06-28 00:06:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:06:05,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:06:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-06-28 00:06:05,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464285714285714 [2024-06-28 00:06:05,017 INFO L175 Difference]: Start difference. First operand has 326 places, 350 transitions, 5277 flow. Second operand 7 states and 153 transitions. [2024-06-28 00:06:05,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 367 transitions, 6124 flow [2024-06-28 00:06:06,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 367 transitions, 5999 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 00:06:06,141 INFO L231 Difference]: Finished difference. Result has 326 places, 354 transitions, 5357 flow [2024-06-28 00:06:06,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5152, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5357, PETRI_PLACES=326, PETRI_TRANSITIONS=354} [2024-06-28 00:06:06,141 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-28 00:06:06,142 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 354 transitions, 5357 flow [2024-06-28 00:06:06,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:06,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:06,142 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 00:06:06,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:06:06,142 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:06,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:06,142 INFO L85 PathProgramCache]: Analyzing trace with hash 265971195, now seen corresponding path program 8 times [2024-06-28 00:06:06,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:06,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908289600] [2024-06-28 00:06:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:06,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:06,852 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 00:06:06,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:06,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908289600] [2024-06-28 00:06:06,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908289600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:06,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:06,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:06:06,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632784858] [2024-06-28 00:06:06,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:06,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:06:06,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:06,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:06:06,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:06:06,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:06:06,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 354 transitions, 5357 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:06,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:06,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:06:06,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:07,993 INFO L124 PetriNetUnfolderBase]: 2592/4734 cut-off events. [2024-06-28 00:06:07,993 INFO L125 PetriNetUnfolderBase]: For 288074/288074 co-relation queries the response was YES. [2024-06-28 00:06:08,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31851 conditions, 4734 events. 2592/4734 cut-off events. For 288074/288074 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 36176 event pairs, 537 based on Foata normal form. 6/4673 useless extension candidates. Maximal degree in co-relation 31706. Up to 3955 conditions per place. [2024-06-28 00:06:08,055 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 321 selfloop transitions, 40 changer transitions 0/369 dead transitions. [2024-06-28 00:06:08,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 369 transitions, 6139 flow [2024-06-28 00:06:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:06:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:06:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 150 transitions. [2024-06-28 00:06:08,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-06-28 00:06:08,056 INFO L175 Difference]: Start difference. First operand has 326 places, 354 transitions, 5357 flow. Second operand 7 states and 150 transitions. [2024-06-28 00:06:08,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 369 transitions, 6139 flow [2024-06-28 00:06:09,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 369 transitions, 5971 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-06-28 00:06:09,260 INFO L231 Difference]: Finished difference. Result has 329 places, 354 transitions, 5274 flow [2024-06-28 00:06:09,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5189, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5274, PETRI_PLACES=329, PETRI_TRANSITIONS=354} [2024-06-28 00:06:09,261 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-28 00:06:09,261 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 354 transitions, 5274 flow [2024-06-28 00:06:09,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:09,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:09,261 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 00:06:09,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:06:09,262 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:09,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:09,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1158073111, now seen corresponding path program 9 times [2024-06-28 00:06:09,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:09,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619041413] [2024-06-28 00:06:09,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:09,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:10,242 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 00:06:10,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:10,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619041413] [2024-06-28 00:06:10,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619041413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:10,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:10,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:10,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150083137] [2024-06-28 00:06:10,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:10,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:10,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:10,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:10,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:06:10,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 354 transitions, 5274 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:06:10,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:10,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:06:10,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:11,937 INFO L124 PetriNetUnfolderBase]: 2831/5136 cut-off events. [2024-06-28 00:06:11,938 INFO L125 PetriNetUnfolderBase]: For 317224/317224 co-relation queries the response was YES. [2024-06-28 00:06:11,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35085 conditions, 5136 events. 2831/5136 cut-off events. For 317224/317224 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 39421 event pairs, 403 based on Foata normal form. 4/5088 useless extension candidates. Maximal degree in co-relation 34938. Up to 3702 conditions per place. [2024-06-28 00:06:12,001 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 335 selfloop transitions, 116 changer transitions 0/458 dead transitions. [2024-06-28 00:06:12,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 458 transitions, 7522 flow [2024-06-28 00:06:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 00:06:12,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 00:06:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 274 transitions. [2024-06-28 00:06:12,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48928571428571427 [2024-06-28 00:06:12,003 INFO L175 Difference]: Start difference. First operand has 329 places, 354 transitions, 5274 flow. Second operand 14 states and 274 transitions. [2024-06-28 00:06:12,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 458 transitions, 7522 flow [2024-06-28 00:06:13,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 458 transitions, 7441 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 00:06:13,110 INFO L231 Difference]: Finished difference. Result has 346 places, 413 transitions, 6493 flow [2024-06-28 00:06:13,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5193, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6493, PETRI_PLACES=346, PETRI_TRANSITIONS=413} [2024-06-28 00:06:13,110 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-28 00:06:13,110 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 413 transitions, 6493 flow [2024-06-28 00:06:13,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:06:13,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:13,111 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 00:06:13,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:06:13,111 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:13,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1157744821, now seen corresponding path program 10 times [2024-06-28 00:06:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:13,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353778423] [2024-06-28 00:06:13,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:13,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:14,200 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 00:06:14,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:14,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353778423] [2024-06-28 00:06:14,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353778423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:14,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:14,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:14,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538928531] [2024-06-28 00:06:14,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:14,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:14,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:14,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:14,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:14,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:06:14,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 413 transitions, 6493 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:06:14,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:14,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:06:14,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:15,626 INFO L124 PetriNetUnfolderBase]: 3003/5492 cut-off events. [2024-06-28 00:06:15,627 INFO L125 PetriNetUnfolderBase]: For 449442/449442 co-relation queries the response was YES. [2024-06-28 00:06:15,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39938 conditions, 5492 events. 3003/5492 cut-off events. For 449442/449442 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 42837 event pairs, 454 based on Foata normal form. 24/5450 useless extension candidates. Maximal degree in co-relation 39781. Up to 3086 conditions per place. [2024-06-28 00:06:15,842 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 347 selfloop transitions, 102 changer transitions 1/457 dead transitions. [2024-06-28 00:06:15,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 457 transitions, 8018 flow [2024-06-28 00:06:15,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:06:15,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:06:15,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-28 00:06:15,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5305555555555556 [2024-06-28 00:06:15,843 INFO L175 Difference]: Start difference. First operand has 346 places, 413 transitions, 6493 flow. Second operand 9 states and 191 transitions. [2024-06-28 00:06:15,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 457 transitions, 8018 flow [2024-06-28 00:06:17,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 457 transitions, 7704 flow, removed 134 selfloop flow, removed 3 redundant places. [2024-06-28 00:06:17,550 INFO L231 Difference]: Finished difference. Result has 353 places, 421 transitions, 6730 flow [2024-06-28 00:06:17,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6291, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6730, PETRI_PLACES=353, PETRI_TRANSITIONS=421} [2024-06-28 00:06:17,550 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 312 predicate places. [2024-06-28 00:06:17,550 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 421 transitions, 6730 flow [2024-06-28 00:06:17,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:06:17,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:17,551 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 00:06:17,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:06:17,551 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:17,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:17,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1665674523, now seen corresponding path program 11 times [2024-06-28 00:06:17,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:17,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880916543] [2024-06-28 00:06:17,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:17,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:06:18,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:18,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880916543] [2024-06-28 00:06:18,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880916543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:18,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:18,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:18,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338956581] [2024-06-28 00:06:18,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:18,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:18,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:18,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:18,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:18,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:06:18,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 421 transitions, 6730 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:06:18,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:18,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:06:18,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:20,591 INFO L124 PetriNetUnfolderBase]: 3069/5608 cut-off events. [2024-06-28 00:06:20,591 INFO L125 PetriNetUnfolderBase]: For 434669/434669 co-relation queries the response was YES. [2024-06-28 00:06:20,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41678 conditions, 5608 events. 3069/5608 cut-off events. For 434669/434669 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 43830 event pairs, 579 based on Foata normal form. 6/5554 useless extension candidates. Maximal degree in co-relation 41519. Up to 4369 conditions per place. [2024-06-28 00:06:20,697 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 380 selfloop transitions, 84 changer transitions 0/471 dead transitions. [2024-06-28 00:06:20,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 471 transitions, 8580 flow [2024-06-28 00:06:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:06:20,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:06:20,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 243 transitions. [2024-06-28 00:06:20,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50625 [2024-06-28 00:06:20,699 INFO L175 Difference]: Start difference. First operand has 353 places, 421 transitions, 6730 flow. Second operand 12 states and 243 transitions. [2024-06-28 00:06:20,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 471 transitions, 8580 flow [2024-06-28 00:06:22,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 471 transitions, 8347 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-28 00:06:22,549 INFO L231 Difference]: Finished difference. Result has 363 places, 434 transitions, 7093 flow [2024-06-28 00:06:22,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6497, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7093, PETRI_PLACES=363, PETRI_TRANSITIONS=434} [2024-06-28 00:06:22,550 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 322 predicate places. [2024-06-28 00:06:22,550 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 434 transitions, 7093 flow [2024-06-28 00:06:22,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:06:22,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:22,550 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 00:06:22,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:06:22,550 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:22,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:22,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1665663363, now seen corresponding path program 12 times [2024-06-28 00:06:22,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:22,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474260860] [2024-06-28 00:06:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:22,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:23,452 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 00:06:23,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:23,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474260860] [2024-06-28 00:06:23,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474260860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:23,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:23,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:06:23,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239157154] [2024-06-28 00:06:23,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:23,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:06:23,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:23,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:06:23,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:06:23,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:06:23,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 434 transitions, 7093 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:23,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:23,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:06:23,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:24,946 INFO L124 PetriNetUnfolderBase]: 3157/5768 cut-off events. [2024-06-28 00:06:24,946 INFO L125 PetriNetUnfolderBase]: For 503967/503967 co-relation queries the response was YES. [2024-06-28 00:06:25,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44453 conditions, 5768 events. 3157/5768 cut-off events. For 503967/503967 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 45375 event pairs, 602 based on Foata normal form. 8/5715 useless extension candidates. Maximal degree in co-relation 44290. Up to 4382 conditions per place. [2024-06-28 00:06:25,038 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 378 selfloop transitions, 86 changer transitions 0/472 dead transitions. [2024-06-28 00:06:25,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 472 transitions, 8733 flow [2024-06-28 00:06:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:06:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:06:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-28 00:06:25,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611111111111111 [2024-06-28 00:06:25,040 INFO L175 Difference]: Start difference. First operand has 363 places, 434 transitions, 7093 flow. Second operand 9 states and 202 transitions. [2024-06-28 00:06:25,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 472 transitions, 8733 flow [2024-06-28 00:06:27,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 472 transitions, 8294 flow, removed 131 selfloop flow, removed 10 redundant places. [2024-06-28 00:06:27,550 INFO L231 Difference]: Finished difference. Result has 362 places, 441 transitions, 7135 flow [2024-06-28 00:06:27,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6722, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7135, PETRI_PLACES=362, PETRI_TRANSITIONS=441} [2024-06-28 00:06:27,551 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 321 predicate places. [2024-06-28 00:06:27,551 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 441 transitions, 7135 flow [2024-06-28 00:06:27,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:27,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:27,551 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 00:06:27,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:06:27,552 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:27,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:27,552 INFO L85 PathProgramCache]: Analyzing trace with hash -786846654, now seen corresponding path program 4 times [2024-06-28 00:06:27,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:27,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126277138] [2024-06-28 00:06:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:27,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:28,326 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 00:06:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126277138] [2024-06-28 00:06:28,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126277138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:28,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:28,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:28,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211375857] [2024-06-28 00:06:28,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:28,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:28,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:28,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:28,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:06:28,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 441 transitions, 7135 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:06:28,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:28,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:06:28,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:29,713 INFO L124 PetriNetUnfolderBase]: 3162/5785 cut-off events. [2024-06-28 00:06:29,713 INFO L125 PetriNetUnfolderBase]: For 483954/483954 co-relation queries the response was YES. [2024-06-28 00:06:29,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43860 conditions, 5785 events. 3162/5785 cut-off events. For 483954/483954 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 45540 event pairs, 710 based on Foata normal form. 1/5704 useless extension candidates. Maximal degree in co-relation 43700. Up to 4741 conditions per place. [2024-06-28 00:06:29,798 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 394 selfloop transitions, 66 changer transitions 0/467 dead transitions. [2024-06-28 00:06:29,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 467 transitions, 8253 flow [2024-06-28 00:06:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:06:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:06:29,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-28 00:06:29,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5111111111111111 [2024-06-28 00:06:29,800 INFO L175 Difference]: Start difference. First operand has 362 places, 441 transitions, 7135 flow. Second operand 9 states and 184 transitions. [2024-06-28 00:06:29,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 467 transitions, 8253 flow [2024-06-28 00:06:32,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 467 transitions, 8061 flow, removed 63 selfloop flow, removed 4 redundant places. [2024-06-28 00:06:32,327 INFO L231 Difference]: Finished difference. Result has 368 places, 447 transitions, 7239 flow [2024-06-28 00:06:32,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6943, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7239, PETRI_PLACES=368, PETRI_TRANSITIONS=447} [2024-06-28 00:06:32,328 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-28 00:06:32,328 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 447 transitions, 7239 flow [2024-06-28 00:06:32,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:06:32,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:32,328 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 00:06:32,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:06:32,328 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:32,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:32,329 INFO L85 PathProgramCache]: Analyzing trace with hash -423042799, now seen corresponding path program 13 times [2024-06-28 00:06:32,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:32,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101032647] [2024-06-28 00:06:32,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:32,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:33,032 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 00:06:33,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:33,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101032647] [2024-06-28 00:06:33,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101032647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:33,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:33,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:06:33,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62097870] [2024-06-28 00:06:33,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:33,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:06:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:06:33,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:06:33,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:06:33,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 447 transitions, 7239 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:33,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:33,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:06:33,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:34,410 INFO L124 PetriNetUnfolderBase]: 3164/5795 cut-off events. [2024-06-28 00:06:34,410 INFO L125 PetriNetUnfolderBase]: For 503317/503317 co-relation queries the response was YES. [2024-06-28 00:06:34,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43796 conditions, 5795 events. 3164/5795 cut-off events. For 503317/503317 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 45641 event pairs, 633 based on Foata normal form. 8/5731 useless extension candidates. Maximal degree in co-relation 43633. Up to 4619 conditions per place. [2024-06-28 00:06:34,501 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 407 selfloop transitions, 65 changer transitions 0/480 dead transitions. [2024-06-28 00:06:34,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 480 transitions, 8488 flow [2024-06-28 00:06:34,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:06:34,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:06:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 217 transitions. [2024-06-28 00:06:34,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425 [2024-06-28 00:06:34,502 INFO L175 Difference]: Start difference. First operand has 368 places, 447 transitions, 7239 flow. Second operand 10 states and 217 transitions. [2024-06-28 00:06:34,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 480 transitions, 8488 flow [2024-06-28 00:06:36,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 480 transitions, 8295 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-28 00:06:36,658 INFO L231 Difference]: Finished difference. Result has 375 places, 448 transitions, 7233 flow [2024-06-28 00:06:36,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7046, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7233, PETRI_PLACES=375, PETRI_TRANSITIONS=448} [2024-06-28 00:06:36,659 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-28 00:06:36,659 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 448 transitions, 7233 flow [2024-06-28 00:06:36,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:36,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:36,659 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 00:06:36,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:06:36,659 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:36,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:36,660 INFO L85 PathProgramCache]: Analyzing trace with hash 361713181, now seen corresponding path program 14 times [2024-06-28 00:06:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:36,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398974881] [2024-06-28 00:06:36,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:36,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:37,426 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 00:06:37,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:37,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398974881] [2024-06-28 00:06:37,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398974881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:37,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:37,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:37,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954636960] [2024-06-28 00:06:37,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:37,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:37,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:37,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:37,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:37,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:06:37,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 448 transitions, 7233 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:06:37,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:37,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:06:37,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:38,908 INFO L124 PetriNetUnfolderBase]: 3184/5831 cut-off events. [2024-06-28 00:06:38,908 INFO L125 PetriNetUnfolderBase]: For 509282/509282 co-relation queries the response was YES. [2024-06-28 00:06:38,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44321 conditions, 5831 events. 3184/5831 cut-off events. For 509282/509282 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 45966 event pairs, 656 based on Foata normal form. 6/5765 useless extension candidates. Maximal degree in co-relation 44156. Up to 4750 conditions per place. [2024-06-28 00:06:38,993 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 410 selfloop transitions, 60 changer transitions 0/477 dead transitions. [2024-06-28 00:06:38,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 477 transitions, 8343 flow [2024-06-28 00:06:38,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:06:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:06:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 00:06:38,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-06-28 00:06:38,995 INFO L175 Difference]: Start difference. First operand has 375 places, 448 transitions, 7233 flow. Second operand 11 states and 215 transitions. [2024-06-28 00:06:38,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 477 transitions, 8343 flow [2024-06-28 00:06:41,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 477 transitions, 8124 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 00:06:41,348 INFO L231 Difference]: Finished difference. Result has 378 places, 450 transitions, 7223 flow [2024-06-28 00:06:41,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7024, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7223, PETRI_PLACES=378, PETRI_TRANSITIONS=450} [2024-06-28 00:06:41,348 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-28 00:06:41,349 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 450 transitions, 7223 flow [2024-06-28 00:06:41,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:06:41,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:41,349 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 00:06:41,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:06:41,349 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:41,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:41,350 INFO L85 PathProgramCache]: Analyzing trace with hash 367254338, now seen corresponding path program 5 times [2024-06-28 00:06:41,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:41,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873582646] [2024-06-28 00:06:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:41,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:42,430 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 00:06:42,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:42,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873582646] [2024-06-28 00:06:42,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873582646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:42,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:42,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:06:42,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932023998] [2024-06-28 00:06:42,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:42,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:06:42,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:42,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:06:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:06:42,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:06:42,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 450 transitions, 7223 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:42,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:42,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:06:42,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:43,814 INFO L124 PetriNetUnfolderBase]: 3197/5851 cut-off events. [2024-06-28 00:06:43,815 INFO L125 PetriNetUnfolderBase]: For 505832/505832 co-relation queries the response was YES. [2024-06-28 00:06:43,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44556 conditions, 5851 events. 3197/5851 cut-off events. For 505832/505832 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 46214 event pairs, 717 based on Foata normal form. 1/5765 useless extension candidates. Maximal degree in co-relation 44391. Up to 4837 conditions per place. [2024-06-28 00:06:43,906 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 403 selfloop transitions, 70 changer transitions 0/481 dead transitions. [2024-06-28 00:06:43,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 481 transitions, 8664 flow [2024-06-28 00:06:43,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:06:43,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:06:43,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 196 transitions. [2024-06-28 00:06:43,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 00:06:43,913 INFO L175 Difference]: Start difference. First operand has 378 places, 450 transitions, 7223 flow. Second operand 9 states and 196 transitions. [2024-06-28 00:06:43,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 481 transitions, 8664 flow [2024-06-28 00:06:46,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 481 transitions, 8504 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 00:06:46,239 INFO L231 Difference]: Finished difference. Result has 380 places, 459 transitions, 7521 flow [2024-06-28 00:06:46,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7063, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7521, PETRI_PLACES=380, PETRI_TRANSITIONS=459} [2024-06-28 00:06:46,240 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 339 predicate places. [2024-06-28 00:06:46,240 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 459 transitions, 7521 flow [2024-06-28 00:06:46,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:46,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:46,240 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 00:06:46,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:06:46,241 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:46,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:46,241 INFO L85 PathProgramCache]: Analyzing trace with hash 361713398, now seen corresponding path program 5 times [2024-06-28 00:06:46,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:46,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210527204] [2024-06-28 00:06:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:46,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:46,853 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 00:06:46,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:46,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210527204] [2024-06-28 00:06:46,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210527204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:46,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:46,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:06:46,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440530257] [2024-06-28 00:06:46,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:46,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:06:46,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:46,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:06:46,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:06:46,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:06:46,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 459 transitions, 7521 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:46,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:46,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:06:46,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:48,489 INFO L124 PetriNetUnfolderBase]: 3229/5915 cut-off events. [2024-06-28 00:06:48,490 INFO L125 PetriNetUnfolderBase]: For 549245/549245 co-relation queries the response was YES. [2024-06-28 00:06:48,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45800 conditions, 5915 events. 3229/5915 cut-off events. For 549245/549245 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 46844 event pairs, 669 based on Foata normal form. 4/5843 useless extension candidates. Maximal degree in co-relation 45633. Up to 4788 conditions per place. [2024-06-28 00:06:48,563 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 425 selfloop transitions, 55 changer transitions 0/488 dead transitions. [2024-06-28 00:06:48,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 488 transitions, 8815 flow [2024-06-28 00:06:48,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:06:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:06:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 196 transitions. [2024-06-28 00:06:48,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-28 00:06:48,564 INFO L175 Difference]: Start difference. First operand has 380 places, 459 transitions, 7521 flow. Second operand 9 states and 196 transitions. [2024-06-28 00:06:48,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 488 transitions, 8815 flow [2024-06-28 00:06:50,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 488 transitions, 8601 flow, removed 78 selfloop flow, removed 5 redundant places. [2024-06-28 00:06:50,845 INFO L231 Difference]: Finished difference. Result has 384 places, 461 transitions, 7519 flow [2024-06-28 00:06:50,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7307, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7519, PETRI_PLACES=384, PETRI_TRANSITIONS=461} [2024-06-28 00:06:50,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-28 00:06:50,845 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 461 transitions, 7519 flow [2024-06-28 00:06:50,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:50,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:50,846 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 00:06:50,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:06:50,846 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:50,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:50,846 INFO L85 PathProgramCache]: Analyzing trace with hash -888983904, now seen corresponding path program 6 times [2024-06-28 00:06:50,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:50,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644577311] [2024-06-28 00:06:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:50,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:51,579 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 00:06:51,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:51,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644577311] [2024-06-28 00:06:51,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644577311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:51,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:51,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:06:51,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806412086] [2024-06-28 00:06:51,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:51,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:06:51,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:51,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:06:51,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:06:51,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:06:51,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 461 transitions, 7519 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:06:51,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:51,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:06:51,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:53,086 INFO L124 PetriNetUnfolderBase]: 3234/5924 cut-off events. [2024-06-28 00:06:53,087 INFO L125 PetriNetUnfolderBase]: For 549401/549401 co-relation queries the response was YES. [2024-06-28 00:06:53,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46088 conditions, 5924 events. 3234/5924 cut-off events. For 549401/549401 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 46911 event pairs, 729 based on Foata normal form. 1/5835 useless extension candidates. Maximal degree in co-relation 45919. Up to 4847 conditions per place. [2024-06-28 00:06:53,180 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 401 selfloop transitions, 76 changer transitions 0/484 dead transitions. [2024-06-28 00:06:53,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 484 transitions, 8653 flow [2024-06-28 00:06:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:06:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:06:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 00:06:53,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-06-28 00:06:53,181 INFO L175 Difference]: Start difference. First operand has 384 places, 461 transitions, 7519 flow. Second operand 9 states and 183 transitions. [2024-06-28 00:06:53,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 484 transitions, 8653 flow [2024-06-28 00:06:55,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 484 transitions, 8523 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 00:06:55,864 INFO L231 Difference]: Finished difference. Result has 387 places, 464 transitions, 7675 flow [2024-06-28 00:06:55,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7389, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7675, PETRI_PLACES=387, PETRI_TRANSITIONS=464} [2024-06-28 00:06:55,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-28 00:06:55,865 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 464 transitions, 7675 flow [2024-06-28 00:06:55,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:06:55,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:06:55,865 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 00:06:55,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:06:55,865 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:06:55,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:06:55,866 INFO L85 PathProgramCache]: Analyzing trace with hash -773692734, now seen corresponding path program 7 times [2024-06-28 00:06:55,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:06:55,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267593312] [2024-06-28 00:06:55,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:06:55,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:06:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:06:56,552 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 00:06:56,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:06:56,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267593312] [2024-06-28 00:06:56,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267593312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:06:56,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:06:56,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:06:56,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075750485] [2024-06-28 00:06:56,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:06:56,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:06:56,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:06:56,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:06:56,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:06:56,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:06:56,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 464 transitions, 7675 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:06:56,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:06:56,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:06:56,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:06:58,069 INFO L124 PetriNetUnfolderBase]: 3494/6325 cut-off events. [2024-06-28 00:06:58,070 INFO L125 PetriNetUnfolderBase]: For 762775/762775 co-relation queries the response was YES. [2024-06-28 00:06:58,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54922 conditions, 6325 events. 3494/6325 cut-off events. For 762775/762775 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 50112 event pairs, 688 based on Foata normal form. 9/6249 useless extension candidates. Maximal degree in co-relation 54752. Up to 3710 conditions per place. [2024-06-28 00:06:58,171 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 346 selfloop transitions, 152 changer transitions 0/506 dead transitions. [2024-06-28 00:06:58,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 506 transitions, 9813 flow [2024-06-28 00:06:58,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:06:58,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:06:58,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-28 00:06:58,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596875 [2024-06-28 00:06:58,173 INFO L175 Difference]: Start difference. First operand has 387 places, 464 transitions, 7675 flow. Second operand 8 states and 191 transitions. [2024-06-28 00:06:58,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 506 transitions, 9813 flow [2024-06-28 00:07:00,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 506 transitions, 9569 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 00:07:00,971 INFO L231 Difference]: Finished difference. Result has 390 places, 469 transitions, 8073 flow [2024-06-28 00:07:00,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7431, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8073, PETRI_PLACES=390, PETRI_TRANSITIONS=469} [2024-06-28 00:07:00,971 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-28 00:07:00,972 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 469 transitions, 8073 flow [2024-06-28 00:07:00,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:00,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:00,972 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 00:07:00,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:07:00,972 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:07:00,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:00,973 INFO L85 PathProgramCache]: Analyzing trace with hash 214921070, now seen corresponding path program 6 times [2024-06-28 00:07:00,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:00,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759588702] [2024-06-28 00:07:00,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:00,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:01,589 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 00:07:01,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:01,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759588702] [2024-06-28 00:07:01,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759588702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:01,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:01,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:07:01,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114852880] [2024-06-28 00:07:01,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:01,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:07:01,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:01,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:07:01,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:07:01,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:07:01,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 469 transitions, 8073 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:01,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:01,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:07:01,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:03,174 INFO L124 PetriNetUnfolderBase]: 3486/6349 cut-off events. [2024-06-28 00:07:03,175 INFO L125 PetriNetUnfolderBase]: For 750012/750012 co-relation queries the response was YES. [2024-06-28 00:07:03,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55316 conditions, 6349 events. 3486/6349 cut-off events. For 750012/750012 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 50670 event pairs, 799 based on Foata normal form. 4/6276 useless extension candidates. Maximal degree in co-relation 55145. Up to 5198 conditions per place. [2024-06-28 00:07:03,277 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 428 selfloop transitions, 53 changer transitions 0/489 dead transitions. [2024-06-28 00:07:03,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 489 transitions, 9087 flow [2024-06-28 00:07:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:07:03,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:07:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-06-28 00:07:03,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607142857142857 [2024-06-28 00:07:03,279 INFO L175 Difference]: Start difference. First operand has 390 places, 469 transitions, 8073 flow. Second operand 7 states and 157 transitions. [2024-06-28 00:07:03,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 489 transitions, 9087 flow [2024-06-28 00:07:06,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 489 transitions, 8915 flow, removed 47 selfloop flow, removed 2 redundant places. [2024-06-28 00:07:06,771 INFO L231 Difference]: Finished difference. Result has 395 places, 469 transitions, 8015 flow [2024-06-28 00:07:06,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7901, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8015, PETRI_PLACES=395, PETRI_TRANSITIONS=469} [2024-06-28 00:07:06,772 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-28 00:07:06,772 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 469 transitions, 8015 flow [2024-06-28 00:07:06,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:06,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:06,772 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 00:07:06,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:07:06,773 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:07:06,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:06,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1081164893, now seen corresponding path program 15 times [2024-06-28 00:07:06,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:06,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058628835] [2024-06-28 00:07:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:06,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:07,713 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 00:07:07,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:07,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058628835] [2024-06-28 00:07:07,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058628835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:07,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:07,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:07:07,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649946784] [2024-06-28 00:07:07,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:07,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:07:07,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:07,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:07:07,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:07:07,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:07:07,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 469 transitions, 8015 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:07,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:07,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:07:07,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:09,477 INFO L124 PetriNetUnfolderBase]: 3477/6334 cut-off events. [2024-06-28 00:07:09,478 INFO L125 PetriNetUnfolderBase]: For 735249/735249 co-relation queries the response was YES. [2024-06-28 00:07:09,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54172 conditions, 6334 events. 3477/6334 cut-off events. For 735249/735249 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 50555 event pairs, 767 based on Foata normal form. 6/6270 useless extension candidates. Maximal degree in co-relation 53999. Up to 5104 conditions per place. [2024-06-28 00:07:09,586 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 420 selfloop transitions, 65 changer transitions 0/493 dead transitions. [2024-06-28 00:07:09,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 493 transitions, 9240 flow [2024-06-28 00:07:09,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:07:09,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:07:09,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 00:07:09,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553125 [2024-06-28 00:07:09,588 INFO L175 Difference]: Start difference. First operand has 395 places, 469 transitions, 8015 flow. Second operand 8 states and 177 transitions. [2024-06-28 00:07:09,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 493 transitions, 9240 flow [2024-06-28 00:07:12,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 493 transitions, 9092 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 00:07:12,916 INFO L231 Difference]: Finished difference. Result has 396 places, 469 transitions, 8006 flow [2024-06-28 00:07:12,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7869, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8006, PETRI_PLACES=396, PETRI_TRANSITIONS=469} [2024-06-28 00:07:12,917 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-28 00:07:12,917 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 469 transitions, 8006 flow [2024-06-28 00:07:12,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:12,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:12,917 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 00:07:12,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:07:12,918 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:07:12,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:12,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1661021330, now seen corresponding path program 4 times [2024-06-28 00:07:12,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:12,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670022520] [2024-06-28 00:07:12,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:12,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:13,608 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 00:07:13,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:13,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670022520] [2024-06-28 00:07:13,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670022520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:13,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:13,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:07:13,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521506108] [2024-06-28 00:07:13,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:13,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:07:13,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:13,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:07:13,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:07:13,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:07:13,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 469 transitions, 8006 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:13,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:13,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:07:13,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:15,368 INFO L124 PetriNetUnfolderBase]: 3476/6335 cut-off events. [2024-06-28 00:07:15,368 INFO L125 PetriNetUnfolderBase]: For 721410/721410 co-relation queries the response was YES. [2024-06-28 00:07:15,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54080 conditions, 6335 events. 3476/6335 cut-off events. For 721410/721410 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 50575 event pairs, 844 based on Foata normal form. 4/6253 useless extension candidates. Maximal degree in co-relation 53907. Up to 5307 conditions per place. [2024-06-28 00:07:15,466 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 435 selfloop transitions, 46 changer transitions 0/489 dead transitions. [2024-06-28 00:07:15,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 489 transitions, 9124 flow [2024-06-28 00:07:15,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:07:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:07:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-28 00:07:15,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-06-28 00:07:15,467 INFO L175 Difference]: Start difference. First operand has 396 places, 469 transitions, 8006 flow. Second operand 7 states and 155 transitions. [2024-06-28 00:07:15,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 489 transitions, 9124 flow [2024-06-28 00:07:18,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 489 transitions, 8939 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 00:07:18,708 INFO L231 Difference]: Finished difference. Result has 397 places, 471 transitions, 8032 flow [2024-06-28 00:07:18,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7821, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8032, PETRI_PLACES=397, PETRI_TRANSITIONS=471} [2024-06-28 00:07:18,708 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 356 predicate places. [2024-06-28 00:07:18,709 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 471 transitions, 8032 flow [2024-06-28 00:07:18,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:18,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:18,709 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 00:07:18,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:07:18,709 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:07:18,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:18,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1488535824, now seen corresponding path program 5 times [2024-06-28 00:07:18,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:18,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916344127] [2024-06-28 00:07:18,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:18,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:19,502 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 00:07:19,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:19,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916344127] [2024-06-28 00:07:19,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916344127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:19,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:19,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:07:19,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081023719] [2024-06-28 00:07:19,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:19,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:07:19,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:19,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:07:19,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:07:19,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:07:19,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 471 transitions, 8032 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:19,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:19,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:07:19,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:21,232 INFO L124 PetriNetUnfolderBase]: 3504/6347 cut-off events. [2024-06-28 00:07:21,232 INFO L125 PetriNetUnfolderBase]: For 749633/749633 co-relation queries the response was YES. [2024-06-28 00:07:21,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54876 conditions, 6347 events. 3504/6347 cut-off events. For 749633/749633 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 50322 event pairs, 756 based on Foata normal form. 2/6267 useless extension candidates. Maximal degree in co-relation 54703. Up to 4752 conditions per place. [2024-06-28 00:07:21,510 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 342 selfloop transitions, 146 changer transitions 0/496 dead transitions. [2024-06-28 00:07:21,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 496 transitions, 9407 flow [2024-06-28 00:07:21,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:07:21,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:07:21,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-28 00:07:21,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2024-06-28 00:07:21,511 INFO L175 Difference]: Start difference. First operand has 397 places, 471 transitions, 8032 flow. Second operand 7 states and 164 transitions. [2024-06-28 00:07:21,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 496 transitions, 9407 flow [2024-06-28 00:07:25,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 496 transitions, 9242 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 00:07:25,177 INFO L231 Difference]: Finished difference. Result has 400 places, 474 transitions, 8423 flow [2024-06-28 00:07:25,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7867, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8423, PETRI_PLACES=400, PETRI_TRANSITIONS=474} [2024-06-28 00:07:25,177 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2024-06-28 00:07:25,177 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 474 transitions, 8423 flow [2024-06-28 00:07:25,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:25,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:25,178 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 00:07:25,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:07:25,178 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:07:25,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1661021516, now seen corresponding path program 8 times [2024-06-28 00:07:25,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:25,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030050781] [2024-06-28 00:07:25,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:25,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:25,821 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 00:07:25,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:25,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030050781] [2024-06-28 00:07:25,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030050781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:25,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:25,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:25,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471479673] [2024-06-28 00:07:25,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:25,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:25,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:25,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:25,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:25,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:07:25,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 474 transitions, 8423 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:07:25,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:25,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:07:25,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:27,525 INFO L124 PetriNetUnfolderBase]: 3529/6424 cut-off events. [2024-06-28 00:07:27,525 INFO L125 PetriNetUnfolderBase]: For 791880/791880 co-relation queries the response was YES. [2024-06-28 00:07:27,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56186 conditions, 6424 events. 3529/6424 cut-off events. For 791880/791880 co-relation queries the response was YES. Maximal size of possible extension queue 573. Compared 51423 event pairs, 873 based on Foata normal form. 9/6343 useless extension candidates. Maximal degree in co-relation 56010. Up to 5368 conditions per place. [2024-06-28 00:07:27,637 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 443 selfloop transitions, 47 changer transitions 0/497 dead transitions. [2024-06-28 00:07:27,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 497 transitions, 9583 flow [2024-06-28 00:07:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:07:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:07:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 00:07:27,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 00:07:27,642 INFO L175 Difference]: Start difference. First operand has 400 places, 474 transitions, 8423 flow. Second operand 9 states and 180 transitions. [2024-06-28 00:07:27,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 497 transitions, 9583 flow [2024-06-28 00:07:31,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 497 transitions, 9239 flow, removed 82 selfloop flow, removed 4 redundant places. [2024-06-28 00:07:31,426 INFO L231 Difference]: Finished difference. Result has 405 places, 475 transitions, 8237 flow [2024-06-28 00:07:31,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8079, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8237, PETRI_PLACES=405, PETRI_TRANSITIONS=475} [2024-06-28 00:07:31,427 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 364 predicate places. [2024-06-28 00:07:31,427 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 475 transitions, 8237 flow [2024-06-28 00:07:31,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:07:31,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:31,427 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 00:07:31,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:07:31,427 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:07:31,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:31,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1661027313, now seen corresponding path program 16 times [2024-06-28 00:07:31,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:31,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600931974] [2024-06-28 00:07:31,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:31,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:32,123 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 00:07:32,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:32,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600931974] [2024-06-28 00:07:32,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600931974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:32,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:32,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:07:32,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547193866] [2024-06-28 00:07:32,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:32,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:07:32,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:32,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:07:32,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:07:32,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:07:32,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 475 transitions, 8237 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:32,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:32,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:07:32,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:33,801 INFO L124 PetriNetUnfolderBase]: 3516/6403 cut-off events. [2024-06-28 00:07:33,801 INFO L125 PetriNetUnfolderBase]: For 754425/754425 co-relation queries the response was YES. [2024-06-28 00:07:33,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54975 conditions, 6403 events. 3516/6403 cut-off events. For 754425/754425 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 51238 event pairs, 809 based on Foata normal form. 6/6337 useless extension candidates. Maximal degree in co-relation 54799. Up to 5273 conditions per place. [2024-06-28 00:07:33,907 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 432 selfloop transitions, 57 changer transitions 0/497 dead transitions. [2024-06-28 00:07:33,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 497 transitions, 9290 flow [2024-06-28 00:07:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:07:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:07:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2024-06-28 00:07:33,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-06-28 00:07:33,909 INFO L175 Difference]: Start difference. First operand has 405 places, 475 transitions, 8237 flow. Second operand 8 states and 174 transitions. [2024-06-28 00:07:33,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 497 transitions, 9290 flow [2024-06-28 00:07:37,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 497 transitions, 9088 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-28 00:07:37,602 INFO L231 Difference]: Finished difference. Result has 407 places, 475 transitions, 8167 flow [2024-06-28 00:07:37,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8047, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8167, PETRI_PLACES=407, PETRI_TRANSITIONS=475} [2024-06-28 00:07:37,602 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-28 00:07:37,602 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 475 transitions, 8167 flow [2024-06-28 00:07:37,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:37,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:37,603 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 00:07:37,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:07:37,603 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:07:37,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:37,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1488089951, now seen corresponding path program 17 times [2024-06-28 00:07:37,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:37,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050210033] [2024-06-28 00:07:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:37,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:38,482 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 00:07:38,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:38,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050210033] [2024-06-28 00:07:38,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050210033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:38,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:38,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:07:38,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740604811] [2024-06-28 00:07:38,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:38,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:07:38,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:38,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:07:38,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:07:38,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:07:38,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 475 transitions, 8167 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:38,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:38,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:07:38,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:40,171 INFO L124 PetriNetUnfolderBase]: 3576/6527 cut-off events. [2024-06-28 00:07:40,171 INFO L125 PetriNetUnfolderBase]: For 803592/803592 co-relation queries the response was YES. [2024-06-28 00:07:40,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56554 conditions, 6527 events. 3576/6527 cut-off events. For 803592/803592 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 52461 event pairs, 650 based on Foata normal form. 6/6487 useless extension candidates. Maximal degree in co-relation 56378. Up to 4178 conditions per place. [2024-06-28 00:07:40,280 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 329 selfloop transitions, 174 changer transitions 0/511 dead transitions. [2024-06-28 00:07:40,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 511 transitions, 10081 flow [2024-06-28 00:07:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:07:40,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:07:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 00:07:40,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58125 [2024-06-28 00:07:40,282 INFO L175 Difference]: Start difference. First operand has 407 places, 475 transitions, 8167 flow. Second operand 8 states and 186 transitions. [2024-06-28 00:07:40,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 511 transitions, 10081 flow [2024-06-28 00:07:43,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 511 transitions, 9967 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:07:43,712 INFO L231 Difference]: Finished difference. Result has 409 places, 479 transitions, 8597 flow [2024-06-28 00:07:43,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8053, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8597, PETRI_PLACES=409, PETRI_TRANSITIONS=479} [2024-06-28 00:07:43,713 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 368 predicate places. [2024-06-28 00:07:43,713 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 479 transitions, 8597 flow [2024-06-28 00:07:43,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:43,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:43,713 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 00:07:43,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:07:43,713 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:07:43,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:43,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1460624186, now seen corresponding path program 9 times [2024-06-28 00:07:43,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:43,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340842911] [2024-06-28 00:07:43,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:43,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:44,438 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 00:07:44,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:44,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340842911] [2024-06-28 00:07:44,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340842911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:44,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:44,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:07:44,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776410336] [2024-06-28 00:07:44,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:44,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:07:44,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:44,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:07:44,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:07:44,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:07:44,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 479 transitions, 8597 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:07:44,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:44,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:07:44,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:46,116 INFO L124 PetriNetUnfolderBase]: 3573/6525 cut-off events. [2024-06-28 00:07:46,116 INFO L125 PetriNetUnfolderBase]: For 801706/801706 co-relation queries the response was YES. [2024-06-28 00:07:46,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57407 conditions, 6525 events. 3573/6525 cut-off events. For 801706/801706 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 52577 event pairs, 830 based on Foata normal form. 1/6437 useless extension candidates. Maximal degree in co-relation 57229. Up to 5121 conditions per place. [2024-06-28 00:07:46,223 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 346 selfloop transitions, 159 changer transitions 0/512 dead transitions. [2024-06-28 00:07:46,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 512 transitions, 10299 flow [2024-06-28 00:07:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:07:46,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:07:46,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-28 00:07:46,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5194444444444445 [2024-06-28 00:07:46,224 INFO L175 Difference]: Start difference. First operand has 409 places, 479 transitions, 8597 flow. Second operand 9 states and 187 transitions. [2024-06-28 00:07:46,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 512 transitions, 10299 flow [2024-06-28 00:07:49,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 512 transitions, 10097 flow, removed 54 selfloop flow, removed 2 redundant places. [2024-06-28 00:07:49,284 INFO L231 Difference]: Finished difference. Result has 419 places, 493 transitions, 9313 flow [2024-06-28 00:07:49,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8395, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9313, PETRI_PLACES=419, PETRI_TRANSITIONS=493} [2024-06-28 00:07:49,285 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-28 00:07:49,285 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 493 transitions, 9313 flow [2024-06-28 00:07:49,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 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 00:07:49,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:49,285 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 00:07:49,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:07:49,286 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:07:49,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:49,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1653729085, now seen corresponding path program 18 times [2024-06-28 00:07:49,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:49,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961503815] [2024-06-28 00:07:49,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:49,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:50,338 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 00:07:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:50,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961503815] [2024-06-28 00:07:50,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961503815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:50,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:50,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:07:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936527583] [2024-06-28 00:07:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:50,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:07:50,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:07:50,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:07:50,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:07:50,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 493 transitions, 9313 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:50,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:50,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:07:50,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:52,124 INFO L124 PetriNetUnfolderBase]: 3626/6612 cut-off events. [2024-06-28 00:07:52,125 INFO L125 PetriNetUnfolderBase]: For 872092/872092 co-relation queries the response was YES. [2024-06-28 00:07:52,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59821 conditions, 6612 events. 3626/6612 cut-off events. For 872092/872092 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 53288 event pairs, 712 based on Foata normal form. 6/6548 useless extension candidates. Maximal degree in co-relation 59638. Up to 4993 conditions per place. [2024-06-28 00:07:52,248 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 387 selfloop transitions, 125 changer transitions 0/520 dead transitions. [2024-06-28 00:07:52,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 520 transitions, 10798 flow [2024-06-28 00:07:52,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:07:52,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:07:52,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-28 00:07:52,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55625 [2024-06-28 00:07:52,250 INFO L175 Difference]: Start difference. First operand has 419 places, 493 transitions, 9313 flow. Second operand 8 states and 178 transitions. [2024-06-28 00:07:52,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 520 transitions, 10798 flow [2024-06-28 00:07:55,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 520 transitions, 10454 flow, removed 132 selfloop flow, removed 3 redundant places. [2024-06-28 00:07:55,708 INFO L231 Difference]: Finished difference. Result has 424 places, 495 transitions, 9326 flow [2024-06-28 00:07:55,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8973, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9326, PETRI_PLACES=424, PETRI_TRANSITIONS=495} [2024-06-28 00:07:55,709 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-28 00:07:55,709 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 495 transitions, 9326 flow [2024-06-28 00:07:55,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:55,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:07:55,709 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 00:07:55,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:07:55,709 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:07:55,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:07:55,710 INFO L85 PathProgramCache]: Analyzing trace with hash -608320510, now seen corresponding path program 10 times [2024-06-28 00:07:55,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:07:55,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835151692] [2024-06-28 00:07:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:07:55,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:07:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:07:56,530 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 00:07:56,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:07:56,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835151692] [2024-06-28 00:07:56,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835151692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:07:56,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:07:56,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:07:56,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484477906] [2024-06-28 00:07:56,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:07:56,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:07:56,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:07:56,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:07:56,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:07:56,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:07:56,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 495 transitions, 9326 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:07:56,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:07:56,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:07:56,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:07:58,283 INFO L124 PetriNetUnfolderBase]: 3767/6833 cut-off events. [2024-06-28 00:07:58,283 INFO L125 PetriNetUnfolderBase]: For 994407/994407 co-relation queries the response was YES. [2024-06-28 00:07:58,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64922 conditions, 6833 events. 3767/6833 cut-off events. For 994407/994407 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 55086 event pairs, 858 based on Foata normal form. 9/6751 useless extension candidates. Maximal degree in co-relation 64738. Up to 5329 conditions per place. [2024-06-28 00:07:58,402 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 429 selfloop transitions, 101 changer transitions 0/538 dead transitions. [2024-06-28 00:07:58,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 538 transitions, 11597 flow [2024-06-28 00:07:58,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:07:58,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:07:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-06-28 00:07:58,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571875 [2024-06-28 00:07:58,403 INFO L175 Difference]: Start difference. First operand has 424 places, 495 transitions, 9326 flow. Second operand 8 states and 183 transitions. [2024-06-28 00:07:58,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 538 transitions, 11597 flow [2024-06-28 00:08:02,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 538 transitions, 11425 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 00:08:02,740 INFO L231 Difference]: Finished difference. Result has 428 places, 501 transitions, 9717 flow [2024-06-28 00:08:02,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9154, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9717, PETRI_PLACES=428, PETRI_TRANSITIONS=501} [2024-06-28 00:08:02,741 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-28 00:08:02,742 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 501 transitions, 9717 flow [2024-06-28 00:08:02,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:02,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:02,742 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 00:08:02,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:08:02,742 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:08:02,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:02,743 INFO L85 PathProgramCache]: Analyzing trace with hash -615672160, now seen corresponding path program 11 times [2024-06-28 00:08:02,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:02,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673550406] [2024-06-28 00:08:02,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:02,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:03,230 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 00:08:03,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:03,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673550406] [2024-06-28 00:08:03,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673550406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:03,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:03,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:08:03,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904300912] [2024-06-28 00:08:03,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:03,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:08:03,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:03,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:08:03,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:08:03,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:08:03,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 501 transitions, 9717 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:03,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:03,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:08:03,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:05,006 INFO L124 PetriNetUnfolderBase]: 3753/6840 cut-off events. [2024-06-28 00:08:05,007 INFO L125 PetriNetUnfolderBase]: For 973864/973864 co-relation queries the response was YES. [2024-06-28 00:08:05,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64177 conditions, 6840 events. 3753/6840 cut-off events. For 973864/973864 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 55450 event pairs, 882 based on Foata normal form. 9/6755 useless extension candidates. Maximal degree in co-relation 63991. Up to 5596 conditions per place. [2024-06-28 00:08:05,118 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 432 selfloop transitions, 84 changer transitions 0/524 dead transitions. [2024-06-28 00:08:05,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 524 transitions, 11119 flow [2024-06-28 00:08:05,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:08:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:08:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-28 00:08:05,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 00:08:05,119 INFO L175 Difference]: Start difference. First operand has 428 places, 501 transitions, 9717 flow. Second operand 8 states and 176 transitions. [2024-06-28 00:08:05,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 524 transitions, 11119 flow [2024-06-28 00:08:08,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 524 transitions, 10923 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-28 00:08:08,781 INFO L231 Difference]: Finished difference. Result has 433 places, 501 transitions, 9695 flow [2024-06-28 00:08:08,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9521, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9695, PETRI_PLACES=433, PETRI_TRANSITIONS=501} [2024-06-28 00:08:08,782 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-28 00:08:08,782 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 501 transitions, 9695 flow [2024-06-28 00:08:08,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:08,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:08,783 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 00:08:08,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:08:08,783 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:08:08,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash -615665650, now seen corresponding path program 7 times [2024-06-28 00:08:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:08,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50832526] [2024-06-28 00:08:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:08,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:09,518 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 00:08:09,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:09,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50832526] [2024-06-28 00:08:09,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50832526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:09,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:09,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:08:09,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396638460] [2024-06-28 00:08:09,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:09,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:08:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:09,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:08:09,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:08:09,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:08:09,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 501 transitions, 9695 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:09,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:09,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:08:09,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:11,418 INFO L124 PetriNetUnfolderBase]: 3785/6900 cut-off events. [2024-06-28 00:08:11,419 INFO L125 PetriNetUnfolderBase]: For 986193/986193 co-relation queries the response was YES. [2024-06-28 00:08:11,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65059 conditions, 6900 events. 3785/6900 cut-off events. For 986193/986193 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 55986 event pairs, 765 based on Foata normal form. 4/6825 useless extension candidates. Maximal degree in co-relation 64871. Up to 5274 conditions per place. [2024-06-28 00:08:11,533 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 422 selfloop transitions, 92 changer transitions 0/522 dead transitions. [2024-06-28 00:08:11,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 522 transitions, 11055 flow [2024-06-28 00:08:11,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:08:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:08:11,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-28 00:08:11,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5678571428571428 [2024-06-28 00:08:11,534 INFO L175 Difference]: Start difference. First operand has 433 places, 501 transitions, 9695 flow. Second operand 7 states and 159 transitions. [2024-06-28 00:08:11,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 522 transitions, 11055 flow [2024-06-28 00:08:15,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 522 transitions, 10772 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:15,885 INFO L231 Difference]: Finished difference. Result has 433 places, 503 transitions, 9700 flow [2024-06-28 00:08:15,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9412, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9700, PETRI_PLACES=433, PETRI_TRANSITIONS=503} [2024-06-28 00:08:15,886 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-28 00:08:15,886 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 503 transitions, 9700 flow [2024-06-28 00:08:15,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:15,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:15,886 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 00:08:15,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:08:15,886 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:08:15,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:15,887 INFO L85 PathProgramCache]: Analyzing trace with hash -608053600, now seen corresponding path program 12 times [2024-06-28 00:08:15,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:15,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044151979] [2024-06-28 00:08:15,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:15,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:16,415 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 00:08:16,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:16,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044151979] [2024-06-28 00:08:16,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044151979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:16,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:16,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:08:16,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580878945] [2024-06-28 00:08:16,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:16,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:08:16,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:08:16,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:08:16,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:08:16,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 503 transitions, 9700 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:16,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:16,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:08:16,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:18,274 INFO L124 PetriNetUnfolderBase]: 3764/6844 cut-off events. [2024-06-28 00:08:18,274 INFO L125 PetriNetUnfolderBase]: For 974554/974554 co-relation queries the response was YES. [2024-06-28 00:08:18,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63626 conditions, 6844 events. 3764/6844 cut-off events. For 974554/974554 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 55439 event pairs, 855 based on Foata normal form. 9/6757 useless extension candidates. Maximal degree in co-relation 63437. Up to 5369 conditions per place. [2024-06-28 00:08:18,381 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 418 selfloop transitions, 107 changer transitions 0/533 dead transitions. [2024-06-28 00:08:18,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 533 transitions, 11276 flow [2024-06-28 00:08:18,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:08:18,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:08:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 00:08:18,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 00:08:18,382 INFO L175 Difference]: Start difference. First operand has 433 places, 503 transitions, 9700 flow. Second operand 8 states and 180 transitions. [2024-06-28 00:08:18,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 533 transitions, 11276 flow [2024-06-28 00:08:22,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 533 transitions, 11110 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 00:08:22,997 INFO L231 Difference]: Finished difference. Result has 437 places, 503 transitions, 9756 flow [2024-06-28 00:08:22,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9536, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9756, PETRI_PLACES=437, PETRI_TRANSITIONS=503} [2024-06-28 00:08:22,998 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-28 00:08:22,998 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 503 transitions, 9756 flow [2024-06-28 00:08:22,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:22,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:22,998 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 00:08:22,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:08:22,998 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:08:22,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:22,999 INFO L85 PathProgramCache]: Analyzing trace with hash -615677957, now seen corresponding path program 19 times [2024-06-28 00:08:22,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:22,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259552283] [2024-06-28 00:08:22,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:22,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:23,724 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 00:08:23,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:23,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259552283] [2024-06-28 00:08:23,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259552283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:23,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:23,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:08:23,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727587270] [2024-06-28 00:08:23,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:23,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:08:23,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:23,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:08:23,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:08:23,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:08:23,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 503 transitions, 9756 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:23,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:23,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:08:23,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:25,663 INFO L124 PetriNetUnfolderBase]: 3784/6888 cut-off events. [2024-06-28 00:08:25,663 INFO L125 PetriNetUnfolderBase]: For 961402/961402 co-relation queries the response was YES. [2024-06-28 00:08:25,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64006 conditions, 6888 events. 3784/6888 cut-off events. For 961402/961402 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 55992 event pairs, 769 based on Foata normal form. 6/6816 useless extension candidates. Maximal degree in co-relation 63816. Up to 5540 conditions per place. [2024-06-28 00:08:25,768 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 413 selfloop transitions, 101 changer transitions 0/522 dead transitions. [2024-06-28 00:08:25,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 522 transitions, 10916 flow [2024-06-28 00:08:25,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:08:25,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:08:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-28 00:08:25,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540625 [2024-06-28 00:08:25,770 INFO L175 Difference]: Start difference. First operand has 437 places, 503 transitions, 9756 flow. Second operand 8 states and 173 transitions. [2024-06-28 00:08:25,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 522 transitions, 10916 flow [2024-06-28 00:08:30,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 522 transitions, 10688 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 00:08:30,235 INFO L231 Difference]: Finished difference. Result has 438 places, 504 transitions, 9784 flow [2024-06-28 00:08:30,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9528, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9784, PETRI_PLACES=438, PETRI_TRANSITIONS=504} [2024-06-28 00:08:30,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 397 predicate places. [2024-06-28 00:08:30,236 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 504 transitions, 9784 flow [2024-06-28 00:08:30,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:30,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:30,236 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 00:08:30,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:08:30,236 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:08:30,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:30,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1646384348, now seen corresponding path program 6 times [2024-06-28 00:08:30,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:30,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315181230] [2024-06-28 00:08:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:30,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:30,838 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 00:08:30,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:30,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315181230] [2024-06-28 00:08:30,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315181230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:30,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:30,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:08:30,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710079631] [2024-06-28 00:08:30,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:30,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:08:30,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:08:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:08:30,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:08:30,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 504 transitions, 9784 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:30,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:30,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:08:30,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:32,756 INFO L124 PetriNetUnfolderBase]: 3780/6878 cut-off events. [2024-06-28 00:08:32,756 INFO L125 PetriNetUnfolderBase]: For 962206/962206 co-relation queries the response was YES. [2024-06-28 00:08:32,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63959 conditions, 6878 events. 3780/6878 cut-off events. For 962206/962206 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 55677 event pairs, 866 based on Foata normal form. 4/6786 useless extension candidates. Maximal degree in co-relation 63768. Up to 5569 conditions per place. [2024-06-28 00:08:32,867 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 432 selfloop transitions, 84 changer transitions 0/524 dead transitions. [2024-06-28 00:08:32,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 524 transitions, 10962 flow [2024-06-28 00:08:32,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:08:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:08:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-06-28 00:08:32,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5642857142857143 [2024-06-28 00:08:32,869 INFO L175 Difference]: Start difference. First operand has 438 places, 504 transitions, 9784 flow. Second operand 7 states and 158 transitions. [2024-06-28 00:08:32,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 524 transitions, 10962 flow [2024-06-28 00:08:37,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 524 transitions, 10704 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 00:08:37,100 INFO L231 Difference]: Finished difference. Result has 439 places, 506 transitions, 9808 flow [2024-06-28 00:08:37,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9526, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9808, PETRI_PLACES=439, PETRI_TRANSITIONS=506} [2024-06-28 00:08:37,101 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-28 00:08:37,101 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 506 transitions, 9808 flow [2024-06-28 00:08:37,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:37,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:37,101 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 00:08:37,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:08:37,101 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:08:37,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1646377435, now seen corresponding path program 20 times [2024-06-28 00:08:37,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:37,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476176898] [2024-06-28 00:08:37,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:37,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:37,954 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 00:08:37,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:37,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476176898] [2024-06-28 00:08:37,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476176898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:37,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:37,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:08:37,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979395161] [2024-06-28 00:08:37,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:37,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:08:37,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:37,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:08:37,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:08:38,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:08:38,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 506 transitions, 9808 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:38,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:38,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:08:38,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:39,907 INFO L124 PetriNetUnfolderBase]: 3787/6909 cut-off events. [2024-06-28 00:08:39,908 INFO L125 PetriNetUnfolderBase]: For 979569/979569 co-relation queries the response was YES. [2024-06-28 00:08:39,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63806 conditions, 6909 events. 3787/6909 cut-off events. For 979569/979569 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 56219 event pairs, 777 based on Foata normal form. 6/6841 useless extension candidates. Maximal degree in co-relation 63614. Up to 5490 conditions per place. [2024-06-28 00:08:40,021 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 414 selfloop transitions, 107 changer transitions 0/529 dead transitions. [2024-06-28 00:08:40,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 529 transitions, 11232 flow [2024-06-28 00:08:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:08:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:08:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 00:08:40,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553125 [2024-06-28 00:08:40,023 INFO L175 Difference]: Start difference. First operand has 439 places, 506 transitions, 9808 flow. Second operand 8 states and 177 transitions. [2024-06-28 00:08:40,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 529 transitions, 11232 flow [2024-06-28 00:08:44,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 529 transitions, 10990 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 00:08:44,458 INFO L231 Difference]: Finished difference. Result has 442 places, 508 transitions, 9882 flow [2024-06-28 00:08:44,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9566, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9882, PETRI_PLACES=442, PETRI_TRANSITIONS=508} [2024-06-28 00:08:44,459 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 401 predicate places. [2024-06-28 00:08:44,459 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 508 transitions, 9882 flow [2024-06-28 00:08:44,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:44,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:44,459 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 00:08:44,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:08:44,460 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:08:44,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:44,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1660431068, now seen corresponding path program 7 times [2024-06-28 00:08:44,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:44,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785743909] [2024-06-28 00:08:44,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:44,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:45,087 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 00:08:45,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:45,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785743909] [2024-06-28 00:08:45,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785743909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:45,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:45,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:08:45,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898762537] [2024-06-28 00:08:45,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:45,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:08:45,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:45,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:08:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:08:45,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:08:45,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 508 transitions, 9882 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:45,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:45,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:08:45,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:46,980 INFO L124 PetriNetUnfolderBase]: 3795/6903 cut-off events. [2024-06-28 00:08:46,981 INFO L125 PetriNetUnfolderBase]: For 980610/980610 co-relation queries the response was YES. [2024-06-28 00:08:47,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64319 conditions, 6903 events. 3795/6903 cut-off events. For 980610/980610 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 55968 event pairs, 841 based on Foata normal form. 2/6810 useless extension candidates. Maximal degree in co-relation 64126. Up to 5500 conditions per place. [2024-06-28 00:08:47,097 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 417 selfloop transitions, 106 changer transitions 0/531 dead transitions. [2024-06-28 00:08:47,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 531 transitions, 11112 flow [2024-06-28 00:08:47,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:08:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:08:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-28 00:08:47,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 00:08:47,098 INFO L175 Difference]: Start difference. First operand has 442 places, 508 transitions, 9882 flow. Second operand 7 states and 160 transitions. [2024-06-28 00:08:47,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 531 transitions, 11112 flow [2024-06-28 00:08:51,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 531 transitions, 10779 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 00:08:51,759 INFO L231 Difference]: Finished difference. Result has 443 places, 510 transitions, 9880 flow [2024-06-28 00:08:51,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9549, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9880, PETRI_PLACES=443, PETRI_TRANSITIONS=510} [2024-06-28 00:08:51,759 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-28 00:08:51,759 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 510 transitions, 9880 flow [2024-06-28 00:08:51,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:08:51,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:51,760 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 00:08:51,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 00:08:51,760 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:08:51,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:51,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1135063986, now seen corresponding path program 8 times [2024-06-28 00:08:51,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:51,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153478067] [2024-06-28 00:08:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:51,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:52,386 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 00:08:52,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:52,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153478067] [2024-06-28 00:08:52,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153478067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:52,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:52,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:08:52,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576906363] [2024-06-28 00:08:52,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:52,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:08:52,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:08:52,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:08:52,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:08:52,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 510 transitions, 9880 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:08:52,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:52,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:08:52,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:08:54,371 INFO L124 PetriNetUnfolderBase]: 3807/6943 cut-off events. [2024-06-28 00:08:54,371 INFO L125 PetriNetUnfolderBase]: For 1002026/1002026 co-relation queries the response was YES. [2024-06-28 00:08:54,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64331 conditions, 6943 events. 3807/6943 cut-off events. For 1002026/1002026 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 56632 event pairs, 924 based on Foata normal form. 4/6856 useless extension candidates. Maximal degree in co-relation 64136. Up to 5785 conditions per place. [2024-06-28 00:08:54,483 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 486 selfloop transitions, 38 changer transitions 0/531 dead transitions. [2024-06-28 00:08:54,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 531 transitions, 11144 flow [2024-06-28 00:08:54,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:08:54,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:08:54,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 00:08:54,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-06-28 00:08:54,485 INFO L175 Difference]: Start difference. First operand has 443 places, 510 transitions, 9880 flow. Second operand 8 states and 154 transitions. [2024-06-28 00:08:54,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 531 transitions, 11144 flow [2024-06-28 00:08:59,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 531 transitions, 10851 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-28 00:08:59,160 INFO L231 Difference]: Finished difference. Result has 445 places, 511 transitions, 9720 flow [2024-06-28 00:08:59,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9587, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9720, PETRI_PLACES=445, PETRI_TRANSITIONS=511} [2024-06-28 00:08:59,161 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-28 00:08:59,161 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 511 transitions, 9720 flow [2024-06-28 00:08:59,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:08:59,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:08:59,161 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 00:08:59,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 00:08:59,162 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:08:59,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:08:59,162 INFO L85 PathProgramCache]: Analyzing trace with hash 307089676, now seen corresponding path program 8 times [2024-06-28 00:08:59,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:08:59,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339779869] [2024-06-28 00:08:59,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:08:59,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:08:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:08:59,760 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 00:08:59,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:08:59,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339779869] [2024-06-28 00:08:59,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339779869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:08:59,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:08:59,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:08:59,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346303601] [2024-06-28 00:08:59,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:08:59,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:08:59,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:08:59,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:08:59,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:08:59,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:08:59,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 511 transitions, 9720 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:08:59,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:08:59,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:08:59,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:01,757 INFO L124 PetriNetUnfolderBase]: 3827/6973 cut-off events. [2024-06-28 00:09:01,758 INFO L125 PetriNetUnfolderBase]: For 1014289/1014289 co-relation queries the response was YES. [2024-06-28 00:09:01,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64446 conditions, 6973 events. 3827/6973 cut-off events. For 1014289/1014289 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 56877 event pairs, 922 based on Foata normal form. 6/6884 useless extension candidates. Maximal degree in co-relation 64250. Up to 5778 conditions per place. [2024-06-28 00:09:01,869 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 486 selfloop transitions, 41 changer transitions 0/534 dead transitions. [2024-06-28 00:09:01,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 534 transitions, 11072 flow [2024-06-28 00:09:01,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:09:01,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:09:01,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 00:09:01,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2024-06-28 00:09:01,870 INFO L175 Difference]: Start difference. First operand has 445 places, 511 transitions, 9720 flow. Second operand 8 states and 155 transitions. [2024-06-28 00:09:01,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 534 transitions, 11072 flow [2024-06-28 00:09:06,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 534 transitions, 10954 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 00:09:06,992 INFO L231 Difference]: Finished difference. Result has 446 places, 513 transitions, 9813 flow [2024-06-28 00:09:06,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9602, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9813, PETRI_PLACES=446, PETRI_TRANSITIONS=513} [2024-06-28 00:09:06,992 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-28 00:09:06,992 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 513 transitions, 9813 flow [2024-06-28 00:09:06,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:09:06,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:06,993 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 00:09:06,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 00:09:06,993 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:06,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:06,993 INFO L85 PathProgramCache]: Analyzing trace with hash -87279602, now seen corresponding path program 9 times [2024-06-28 00:09:06,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:06,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294258118] [2024-06-28 00:09:06,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:06,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:07,569 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 00:09:07,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294258118] [2024-06-28 00:09:07,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294258118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:07,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:07,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:09:07,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118782346] [2024-06-28 00:09:07,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:07,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:09:07,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:07,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:09:07,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:09:07,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:09:07,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 513 transitions, 9813 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:07,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:07,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:09:07,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:09,470 INFO L124 PetriNetUnfolderBase]: 3839/7013 cut-off events. [2024-06-28 00:09:09,470 INFO L125 PetriNetUnfolderBase]: For 1006399/1006399 co-relation queries the response was YES. [2024-06-28 00:09:09,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64645 conditions, 7013 events. 3839/7013 cut-off events. For 1006399/1006399 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 57442 event pairs, 991 based on Foata normal form. 4/6922 useless extension candidates. Maximal degree in co-relation 64450. Up to 5927 conditions per place. [2024-06-28 00:09:09,584 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 488 selfloop transitions, 33 changer transitions 0/529 dead transitions. [2024-06-28 00:09:09,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 529 transitions, 10939 flow [2024-06-28 00:09:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:09:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:09:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 151 transitions. [2024-06-28 00:09:09,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5392857142857143 [2024-06-28 00:09:09,585 INFO L175 Difference]: Start difference. First operand has 446 places, 513 transitions, 9813 flow. Second operand 7 states and 151 transitions. [2024-06-28 00:09:09,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 529 transitions, 10939 flow [2024-06-28 00:09:15,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 529 transitions, 10776 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 00:09:15,372 INFO L231 Difference]: Finished difference. Result has 447 places, 514 transitions, 9774 flow [2024-06-28 00:09:15,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9650, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9774, PETRI_PLACES=447, PETRI_TRANSITIONS=514} [2024-06-28 00:09:15,372 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2024-06-28 00:09:15,372 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 514 transitions, 9774 flow [2024-06-28 00:09:15,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:15,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:15,372 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 00:09:15,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 00:09:15,373 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:15,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:15,373 INFO L85 PathProgramCache]: Analyzing trace with hash -87279416, now seen corresponding path program 9 times [2024-06-28 00:09:15,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:15,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093428663] [2024-06-28 00:09:15,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:15,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:15,984 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 00:09:15,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:15,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093428663] [2024-06-28 00:09:15,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093428663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:15,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:15,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:09:15,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16711824] [2024-06-28 00:09:15,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:15,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:09:15,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:15,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:09:15,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:09:16,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:09:16,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 514 transitions, 9774 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:16,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:16,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:09:16,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:17,948 INFO L124 PetriNetUnfolderBase]: 3839/7013 cut-off events. [2024-06-28 00:09:17,949 INFO L125 PetriNetUnfolderBase]: For 1011971/1011971 co-relation queries the response was YES. [2024-06-28 00:09:18,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64166 conditions, 7013 events. 3839/7013 cut-off events. For 1011971/1011971 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 57401 event pairs, 981 based on Foata normal form. 6/6920 useless extension candidates. Maximal degree in co-relation 63971. Up to 5892 conditions per place. [2024-06-28 00:09:18,073 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 487 selfloop transitions, 37 changer transitions 0/532 dead transitions. [2024-06-28 00:09:18,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 532 transitions, 10980 flow [2024-06-28 00:09:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:09:18,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:09:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 00:09:18,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-06-28 00:09:18,074 INFO L175 Difference]: Start difference. First operand has 447 places, 514 transitions, 9774 flow. Second operand 7 states and 152 transitions. [2024-06-28 00:09:18,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 532 transitions, 10980 flow [2024-06-28 00:09:23,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 532 transitions, 10874 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 00:09:23,860 INFO L231 Difference]: Finished difference. Result has 449 places, 516 transitions, 9865 flow [2024-06-28 00:09:23,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9668, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9865, PETRI_PLACES=449, PETRI_TRANSITIONS=516} [2024-06-28 00:09:23,861 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 408 predicate places. [2024-06-28 00:09:23,861 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 516 transitions, 9865 flow [2024-06-28 00:09:23,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:23,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:23,862 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 00:09:23,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 00:09:23,863 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:23,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:23,863 INFO L85 PathProgramCache]: Analyzing trace with hash 584507330, now seen corresponding path program 10 times [2024-06-28 00:09:23,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:23,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462455926] [2024-06-28 00:09:23,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:23,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:24,425 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 00:09:24,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:24,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462455926] [2024-06-28 00:09:24,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462455926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:24,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:24,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:09:24,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328866579] [2024-06-28 00:09:24,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:24,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:09:24,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:24,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:09:24,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:09:24,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:09:24,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 516 transitions, 9865 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:24,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:24,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:09:24,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:26,391 INFO L124 PetriNetUnfolderBase]: 3847/7011 cut-off events. [2024-06-28 00:09:26,391 INFO L125 PetriNetUnfolderBase]: For 1005240/1005240 co-relation queries the response was YES. [2024-06-28 00:09:26,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64468 conditions, 7011 events. 3847/7011 cut-off events. For 1005240/1005240 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 57153 event pairs, 985 based on Foata normal form. 2/6914 useless extension candidates. Maximal degree in co-relation 64272. Up to 5876 conditions per place. [2024-06-28 00:09:26,516 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 473 selfloop transitions, 52 changer transitions 0/533 dead transitions. [2024-06-28 00:09:26,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 533 transitions, 11075 flow [2024-06-28 00:09:26,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:09:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:09:26,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 00:09:26,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-06-28 00:09:26,518 INFO L175 Difference]: Start difference. First operand has 449 places, 516 transitions, 9865 flow. Second operand 7 states and 152 transitions. [2024-06-28 00:09:26,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 533 transitions, 11075 flow [2024-06-28 00:09:32,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 533 transitions, 10924 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-28 00:09:32,040 INFO L231 Difference]: Finished difference. Result has 451 places, 518 transitions, 9944 flow [2024-06-28 00:09:32,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9714, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9944, PETRI_PLACES=451, PETRI_TRANSITIONS=518} [2024-06-28 00:09:32,041 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-28 00:09:32,041 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 518 transitions, 9944 flow [2024-06-28 00:09:32,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:32,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:32,041 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 00:09:32,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 00:09:32,041 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:32,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:32,042 INFO L85 PathProgramCache]: Analyzing trace with hash -87291909, now seen corresponding path program 21 times [2024-06-28 00:09:32,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:32,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215285063] [2024-06-28 00:09:32,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:32,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:32,627 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 00:09:32,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215285063] [2024-06-28 00:09:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215285063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:32,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:32,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:09:32,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558082847] [2024-06-28 00:09:32,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:32,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:09:32,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:32,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:09:32,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:09:32,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:09:32,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 518 transitions, 9944 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:32,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:32,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:09:32,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:34,626 INFO L124 PetriNetUnfolderBase]: 3867/7065 cut-off events. [2024-06-28 00:09:34,627 INFO L125 PetriNetUnfolderBase]: For 1042745/1042745 co-relation queries the response was YES. [2024-06-28 00:09:34,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64848 conditions, 7065 events. 3867/7065 cut-off events. For 1042745/1042745 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 57928 event pairs, 1011 based on Foata normal form. 6/6972 useless extension candidates. Maximal degree in co-relation 64651. Up to 5989 conditions per place. [2024-06-28 00:09:34,756 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 494 selfloop transitions, 34 changer transitions 0/536 dead transitions. [2024-06-28 00:09:34,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 536 transitions, 11132 flow [2024-06-28 00:09:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:09:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:09:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 00:09:34,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 00:09:34,757 INFO L175 Difference]: Start difference. First operand has 451 places, 518 transitions, 9944 flow. Second operand 8 states and 168 transitions. [2024-06-28 00:09:34,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 536 transitions, 11132 flow [2024-06-28 00:09:40,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 536 transitions, 10946 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-28 00:09:40,573 INFO L231 Difference]: Finished difference. Result has 454 places, 519 transitions, 9882 flow [2024-06-28 00:09:40,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9758, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9882, PETRI_PLACES=454, PETRI_TRANSITIONS=519} [2024-06-28 00:09:40,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-28 00:09:40,574 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 519 transitions, 9882 flow [2024-06-28 00:09:40,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:40,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:40,574 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 00:09:40,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 00:09:40,575 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:40,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash -87286112, now seen corresponding path program 13 times [2024-06-28 00:09:40,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:40,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8365947] [2024-06-28 00:09:40,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:40,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:40,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:41,081 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 00:09:41,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:41,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8365947] [2024-06-28 00:09:41,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8365947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:41,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:41,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:09:41,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301824990] [2024-06-28 00:09:41,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:41,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:09:41,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:41,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:09:41,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:09:41,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:09:41,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 519 transitions, 9882 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:41,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:41,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:09:41,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:43,081 INFO L124 PetriNetUnfolderBase]: 3867/7059 cut-off events. [2024-06-28 00:09:43,082 INFO L125 PetriNetUnfolderBase]: For 1034963/1034963 co-relation queries the response was YES. [2024-06-28 00:09:43,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64648 conditions, 7059 events. 3867/7059 cut-off events. For 1034963/1034963 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 57741 event pairs, 1006 based on Foata normal form. 3/6961 useless extension candidates. Maximal degree in co-relation 64450. Up to 5997 conditions per place. [2024-06-28 00:09:43,202 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 493 selfloop transitions, 37 changer transitions 0/538 dead transitions. [2024-06-28 00:09:43,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 538 transitions, 11111 flow [2024-06-28 00:09:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:09:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:09:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 00:09:43,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528125 [2024-06-28 00:09:43,204 INFO L175 Difference]: Start difference. First operand has 454 places, 519 transitions, 9882 flow. Second operand 8 states and 169 transitions. [2024-06-28 00:09:43,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 538 transitions, 11111 flow [2024-06-28 00:09:49,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 538 transitions, 11012 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 00:09:49,086 INFO L231 Difference]: Finished difference. Result has 458 places, 523 transitions, 10011 flow [2024-06-28 00:09:49,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9783, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10011, PETRI_PLACES=458, PETRI_TRANSITIONS=523} [2024-06-28 00:09:49,086 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 417 predicate places. [2024-06-28 00:09:49,087 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 523 transitions, 10011 flow [2024-06-28 00:09:49,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:49,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:49,087 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 00:09:49,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 00:09:49,087 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:49,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1109233842, now seen corresponding path program 10 times [2024-06-28 00:09:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:49,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737764342] [2024-06-28 00:09:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:49,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:49,694 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 00:09:49,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737764342] [2024-06-28 00:09:49,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737764342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:49,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:49,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:09:49,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020576131] [2024-06-28 00:09:49,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:49,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:09:49,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:49,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:09:49,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:09:49,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:09:49,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 523 transitions, 10011 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:49,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:49,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:09:49,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:51,713 INFO L124 PetriNetUnfolderBase]: 3859/7061 cut-off events. [2024-06-28 00:09:51,713 INFO L125 PetriNetUnfolderBase]: For 1030054/1030054 co-relation queries the response was YES. [2024-06-28 00:09:51,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64118 conditions, 7061 events. 3859/7061 cut-off events. For 1030054/1030054 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 57913 event pairs, 970 based on Foata normal form. 4/6970 useless extension candidates. Maximal degree in co-relation 63918. Up to 5813 conditions per place. [2024-06-28 00:09:51,839 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 481 selfloop transitions, 49 changer transitions 0/538 dead transitions. [2024-06-28 00:09:51,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 538 transitions, 11105 flow [2024-06-28 00:09:51,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:09:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:09:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2024-06-28 00:09:51,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-06-28 00:09:51,841 INFO L175 Difference]: Start difference. First operand has 458 places, 523 transitions, 10011 flow. Second operand 7 states and 152 transitions. [2024-06-28 00:09:51,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 538 transitions, 11105 flow [2024-06-28 00:09:56,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 538 transitions, 10913 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-28 00:09:56,838 INFO L231 Difference]: Finished difference. Result has 459 places, 523 transitions, 9923 flow [2024-06-28 00:09:56,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9819, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9923, PETRI_PLACES=459, PETRI_TRANSITIONS=523} [2024-06-28 00:09:56,839 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-28 00:09:56,839 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 523 transitions, 9923 flow [2024-06-28 00:09:56,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:56,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:09:56,840 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 00:09:56,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 00:09:56,840 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:09:56,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:09:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1122877128, now seen corresponding path program 11 times [2024-06-28 00:09:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:09:56,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817957349] [2024-06-28 00:09:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:09:56,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:09:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:09:57,456 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 00:09:57,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:09:57,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817957349] [2024-06-28 00:09:57,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817957349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:09:57,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:09:57,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:09:57,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031658192] [2024-06-28 00:09:57,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:09:57,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:09:57,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:09:57,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:09:57,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:09:57,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:09:57,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 523 transitions, 9923 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:09:57,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:09:57,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:09:57,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:09:59,411 INFO L124 PetriNetUnfolderBase]: 3854/7038 cut-off events. [2024-06-28 00:09:59,412 INFO L125 PetriNetUnfolderBase]: For 1024948/1024948 co-relation queries the response was YES. [2024-06-28 00:09:59,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63752 conditions, 7038 events. 3854/7038 cut-off events. For 1024948/1024948 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 57566 event pairs, 950 based on Foata normal form. 2/6939 useless extension candidates. Maximal degree in co-relation 63551. Up to 5723 conditions per place. [2024-06-28 00:09:59,539 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 458 selfloop transitions, 74 changer transitions 0/540 dead transitions. [2024-06-28 00:09:59,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 540 transitions, 11057 flow [2024-06-28 00:09:59,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:09:59,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:09:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-28 00:09:59,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-28 00:09:59,540 INFO L175 Difference]: Start difference. First operand has 459 places, 523 transitions, 9923 flow. Second operand 7 states and 154 transitions. [2024-06-28 00:09:59,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 540 transitions, 11057 flow [2024-06-28 00:10:05,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 540 transitions, 10791 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 00:10:05,858 INFO L231 Difference]: Finished difference. Result has 458 places, 523 transitions, 9816 flow [2024-06-28 00:10:05,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9657, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9816, PETRI_PLACES=458, PETRI_TRANSITIONS=523} [2024-06-28 00:10:05,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 417 predicate places. [2024-06-28 00:10:05,859 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 523 transitions, 9816 flow [2024-06-28 00:10:05,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:10:05,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:05,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:10:05,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 00:10:05,859 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:05,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:05,860 INFO L85 PathProgramCache]: Analyzing trace with hash -87286329, now seen corresponding path program 22 times [2024-06-28 00:10:05,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:05,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380170213] [2024-06-28 00:10:05,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:05,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:06,614 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 00:10:06,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:06,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380170213] [2024-06-28 00:10:06,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380170213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:06,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:06,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:06,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27761957] [2024-06-28 00:10:06,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:06,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:06,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:06,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:06,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:06,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:10:06,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 523 transitions, 9816 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:10:06,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:06,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:10:06,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:08,580 INFO L124 PetriNetUnfolderBase]: 3894/7126 cut-off events. [2024-06-28 00:10:08,581 INFO L125 PetriNetUnfolderBase]: For 1075576/1075576 co-relation queries the response was YES. [2024-06-28 00:10:08,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64695 conditions, 7126 events. 3894/7126 cut-off events. For 1075576/1075576 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 58540 event pairs, 988 based on Foata normal form. 6/7035 useless extension candidates. Maximal degree in co-relation 64495. Up to 5955 conditions per place. [2024-06-28 00:10:08,707 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 497 selfloop transitions, 40 changer transitions 0/545 dead transitions. [2024-06-28 00:10:08,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 545 transitions, 11340 flow [2024-06-28 00:10:08,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:08,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-06-28 00:10:08,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.534375 [2024-06-28 00:10:08,708 INFO L175 Difference]: Start difference. First operand has 458 places, 523 transitions, 9816 flow. Second operand 8 states and 171 transitions. [2024-06-28 00:10:08,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 545 transitions, 11340 flow [2024-06-28 00:10:15,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 545 transitions, 11034 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 00:10:15,300 INFO L231 Difference]: Finished difference. Result has 460 places, 526 transitions, 9750 flow [2024-06-28 00:10:15,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9510, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9750, PETRI_PLACES=460, PETRI_TRANSITIONS=526} [2024-06-28 00:10:15,301 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 419 predicate places. [2024-06-28 00:10:15,301 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 526 transitions, 9750 flow [2024-06-28 00:10:15,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:10:15,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:15,301 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 00:10:15,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 00:10:15,301 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:15,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:15,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1116442272, now seen corresponding path program 14 times [2024-06-28 00:10:15,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:15,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375423899] [2024-06-28 00:10:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:15,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:15,848 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 00:10:15,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:15,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375423899] [2024-06-28 00:10:15,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375423899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:15,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:15,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:15,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60441426] [2024-06-28 00:10:15,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:15,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:15,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:15,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:15,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:15,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:10:15,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 526 transitions, 9750 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:10:15,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:15,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:10:15,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:17,793 INFO L124 PetriNetUnfolderBase]: 3927/7167 cut-off events. [2024-06-28 00:10:17,794 INFO L125 PetriNetUnfolderBase]: For 1111216/1111216 co-relation queries the response was YES. [2024-06-28 00:10:17,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65536 conditions, 7167 events. 3927/7167 cut-off events. For 1111216/1111216 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 58835 event pairs, 922 based on Foata normal form. 9/7075 useless extension candidates. Maximal degree in co-relation 65335. Up to 5480 conditions per place. [2024-06-28 00:10:17,923 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 477 selfloop transitions, 72 changer transitions 0/557 dead transitions. [2024-06-28 00:10:17,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 557 transitions, 11529 flow [2024-06-28 00:10:17,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:17,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:17,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 00:10:17,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553125 [2024-06-28 00:10:17,925 INFO L175 Difference]: Start difference. First operand has 460 places, 526 transitions, 9750 flow. Second operand 8 states and 177 transitions. [2024-06-28 00:10:17,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 557 transitions, 11529 flow [2024-06-28 00:10:23,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 557 transitions, 11381 flow, removed 54 selfloop flow, removed 4 redundant places. [2024-06-28 00:10:23,414 INFO L231 Difference]: Finished difference. Result has 464 places, 528 transitions, 9875 flow [2024-06-28 00:10:23,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9602, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9875, PETRI_PLACES=464, PETRI_TRANSITIONS=528} [2024-06-28 00:10:23,414 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 423 predicate places. [2024-06-28 00:10:23,415 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 528 transitions, 9875 flow [2024-06-28 00:10:23,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:10:23,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:23,415 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 00:10:23,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 00:10:23,415 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:23,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:23,416 INFO L85 PathProgramCache]: Analyzing trace with hash 484458346, now seen corresponding path program 12 times [2024-06-28 00:10:23,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:23,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684386587] [2024-06-28 00:10:23,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:23,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:24,109 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 00:10:24,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:24,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684386587] [2024-06-28 00:10:24,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684386587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:24,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:24,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:10:24,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969667689] [2024-06-28 00:10:24,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:24,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:10:24,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:24,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:10:24,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:10:24,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:10:24,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 528 transitions, 9875 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:10:24,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:24,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:10:24,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:26,068 INFO L124 PetriNetUnfolderBase]: 3935/7185 cut-off events. [2024-06-28 00:10:26,068 INFO L125 PetriNetUnfolderBase]: For 1094497/1094497 co-relation queries the response was YES. [2024-06-28 00:10:26,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65792 conditions, 7185 events. 3935/7185 cut-off events. For 1094497/1094497 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 59051 event pairs, 929 based on Foata normal form. 2/7090 useless extension candidates. Maximal degree in co-relation 65588. Up to 5713 conditions per place. [2024-06-28 00:10:26,204 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 461 selfloop transitions, 85 changer transitions 0/553 dead transitions. [2024-06-28 00:10:26,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 553 transitions, 11563 flow [2024-06-28 00:10:26,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:26,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:26,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 00:10:26,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.490625 [2024-06-28 00:10:26,206 INFO L175 Difference]: Start difference. First operand has 464 places, 528 transitions, 9875 flow. Second operand 8 states and 157 transitions. [2024-06-28 00:10:26,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 553 transitions, 11563 flow [2024-06-28 00:10:32,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 553 transitions, 11189 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 00:10:32,117 INFO L231 Difference]: Finished difference. Result has 466 places, 532 transitions, 9961 flow [2024-06-28 00:10:32,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9501, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9961, PETRI_PLACES=466, PETRI_TRANSITIONS=532} [2024-06-28 00:10:32,117 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 425 predicate places. [2024-06-28 00:10:32,117 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 532 transitions, 9961 flow [2024-06-28 00:10:32,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:10:32,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:32,118 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 00:10:32,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 00:10:32,118 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:32,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:32,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1116175362, now seen corresponding path program 15 times [2024-06-28 00:10:32,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:32,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11292911] [2024-06-28 00:10:32,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:32,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:32,831 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 00:10:32,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:32,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11292911] [2024-06-28 00:10:32,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11292911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:32,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:32,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:32,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453068821] [2024-06-28 00:10:32,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:32,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:32,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:32,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:32,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:32,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:10:32,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 532 transitions, 9961 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:10:32,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:32,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:10:32,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:34,768 INFO L124 PetriNetUnfolderBase]: 3940/7182 cut-off events. [2024-06-28 00:10:34,768 INFO L125 PetriNetUnfolderBase]: For 1094508/1094508 co-relation queries the response was YES. [2024-06-28 00:10:34,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65533 conditions, 7182 events. 3940/7182 cut-off events. For 1094508/1094508 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 58861 event pairs, 1024 based on Foata normal form. 1/7084 useless extension candidates. Maximal degree in co-relation 65328. Up to 6034 conditions per place. [2024-06-28 00:10:34,908 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 476 selfloop transitions, 71 changer transitions 0/555 dead transitions. [2024-06-28 00:10:34,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 555 transitions, 11586 flow [2024-06-28 00:10:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:34,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-28 00:10:34,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-28 00:10:34,909 INFO L175 Difference]: Start difference. First operand has 466 places, 532 transitions, 9961 flow. Second operand 8 states and 172 transitions. [2024-06-28 00:10:34,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 555 transitions, 11586 flow [2024-06-28 00:10:41,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 555 transitions, 11387 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-06-28 00:10:41,634 INFO L231 Difference]: Finished difference. Result has 470 places, 541 transitions, 10195 flow [2024-06-28 00:10:41,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9762, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10195, PETRI_PLACES=470, PETRI_TRANSITIONS=541} [2024-06-28 00:10:41,634 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 429 predicate places. [2024-06-28 00:10:41,634 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 541 transitions, 10195 flow [2024-06-28 00:10:41,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:10:41,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:41,635 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 00:10:41,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 00:10:41,635 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:41,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:41,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1108823495, now seen corresponding path program 23 times [2024-06-28 00:10:41,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:41,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314682373] [2024-06-28 00:10:41,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:41,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:42,524 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 00:10:42,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314682373] [2024-06-28 00:10:42,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314682373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:42,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:42,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:10:42,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273646851] [2024-06-28 00:10:42,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:42,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:10:42,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:10:42,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:10:42,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:10:42,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 541 transitions, 10195 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:10:42,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:42,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:10:42,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:44,660 INFO L124 PetriNetUnfolderBase]: 3993/7297 cut-off events. [2024-06-28 00:10:44,660 INFO L125 PetriNetUnfolderBase]: For 1184622/1184622 co-relation queries the response was YES. [2024-06-28 00:10:44,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67465 conditions, 7297 events. 3993/7297 cut-off events. For 1184622/1184622 co-relation queries the response was YES. Maximal size of possible extension queue 685. Compared 60097 event pairs, 1028 based on Foata normal form. 6/7206 useless extension candidates. Maximal degree in co-relation 67259. Up to 6093 conditions per place. [2024-06-28 00:10:44,804 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 498 selfloop transitions, 57 changer transitions 0/563 dead transitions. [2024-06-28 00:10:44,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 563 transitions, 11771 flow [2024-06-28 00:10:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:44,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:44,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 172 transitions. [2024-06-28 00:10:44,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2024-06-28 00:10:44,806 INFO L175 Difference]: Start difference. First operand has 470 places, 541 transitions, 10195 flow. Second operand 8 states and 172 transitions. [2024-06-28 00:10:44,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 563 transitions, 11771 flow [2024-06-28 00:10:50,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 563 transitions, 11516 flow, removed 99 selfloop flow, removed 3 redundant places. [2024-06-28 00:10:50,876 INFO L231 Difference]: Finished difference. Result has 475 places, 544 transitions, 10220 flow [2024-06-28 00:10:50,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9940, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10220, PETRI_PLACES=475, PETRI_TRANSITIONS=544} [2024-06-28 00:10:50,877 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 434 predicate places. [2024-06-28 00:10:50,877 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 544 transitions, 10220 flow [2024-06-28 00:10:50,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:10:50,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:50,877 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 00:10:50,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 00:10:50,877 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:50,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash 484221196, now seen corresponding path program 13 times [2024-06-28 00:10:50,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:50,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890157009] [2024-06-28 00:10:50,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:50,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:50,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:10:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:10:51,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:10:51,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890157009] [2024-06-28 00:10:51,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890157009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:10:51,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:10:51,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:10:51,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494236241] [2024-06-28 00:10:51,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:10:51,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:10:51,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:10:51,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:10:51,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:10:51,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:10:51,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 544 transitions, 10220 flow. Second operand has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:10:51,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:10:51,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:10:51,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:10:53,581 INFO L124 PetriNetUnfolderBase]: 3988/7286 cut-off events. [2024-06-28 00:10:53,581 INFO L125 PetriNetUnfolderBase]: For 1169324/1169324 co-relation queries the response was YES. [2024-06-28 00:10:53,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67499 conditions, 7286 events. 3988/7286 cut-off events. For 1169324/1169324 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 59993 event pairs, 968 based on Foata normal form. 2/7190 useless extension candidates. Maximal degree in co-relation 67290. Up to 5977 conditions per place. [2024-06-28 00:10:53,725 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 491 selfloop transitions, 63 changer transitions 0/561 dead transitions. [2024-06-28 00:10:53,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 561 transitions, 11434 flow [2024-06-28 00:10:53,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:10:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:10:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-28 00:10:53,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48125 [2024-06-28 00:10:53,726 INFO L175 Difference]: Start difference. First operand has 475 places, 544 transitions, 10220 flow. Second operand 8 states and 154 transitions. [2024-06-28 00:10:53,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 561 transitions, 11434 flow [2024-06-28 00:10:59,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 561 transitions, 11211 flow, removed 80 selfloop flow, removed 4 redundant places. [2024-06-28 00:10:59,730 INFO L231 Difference]: Finished difference. Result has 479 places, 544 transitions, 10133 flow [2024-06-28 00:10:59,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9997, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10133, PETRI_PLACES=479, PETRI_TRANSITIONS=544} [2024-06-28 00:10:59,730 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-28 00:10:59,730 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 544 transitions, 10133 flow [2024-06-28 00:10:59,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 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 00:10:59,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:10:59,731 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 00:10:59,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 00:10:59,731 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:10:59,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:10:59,731 INFO L85 PathProgramCache]: Analyzing trace with hash 484221010, now seen corresponding path program 11 times [2024-06-28 00:10:59,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:10:59,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145964543] [2024-06-28 00:10:59,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:10:59,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:10:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:00,309 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 00:11:00,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:00,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145964543] [2024-06-28 00:11:00,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145964543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:00,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:00,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:00,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685122167] [2024-06-28 00:11:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:00,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:00,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:00,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:00,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:11:00,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 544 transitions, 10133 flow. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 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 00:11:00,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:00,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:11:00,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:02,514 INFO L124 PetriNetUnfolderBase]: 4000/7306 cut-off events. [2024-06-28 00:11:02,514 INFO L125 PetriNetUnfolderBase]: For 1196361/1196361 co-relation queries the response was YES. [2024-06-28 00:11:02,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67488 conditions, 7306 events. 4000/7306 cut-off events. For 1196361/1196361 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 60187 event pairs, 964 based on Foata normal form. 4/7211 useless extension candidates. Maximal degree in co-relation 67276. Up to 5918 conditions per place. [2024-06-28 00:11:02,631 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 497 selfloop transitions, 59 changer transitions 0/563 dead transitions. [2024-06-28 00:11:02,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 563 transitions, 11629 flow [2024-06-28 00:11:02,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:11:02,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:11:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-28 00:11:02,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 00:11:02,632 INFO L175 Difference]: Start difference. First operand has 479 places, 544 transitions, 10133 flow. Second operand 7 states and 147 transitions. [2024-06-28 00:11:02,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 563 transitions, 11629 flow [2024-06-28 00:11:08,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 563 transitions, 11448 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 00:11:08,493 INFO L231 Difference]: Finished difference. Result has 479 places, 545 transitions, 10127 flow [2024-06-28 00:11:08,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9952, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10127, PETRI_PLACES=479, PETRI_TRANSITIONS=545} [2024-06-28 00:11:08,493 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-28 00:11:08,493 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 545 transitions, 10127 flow [2024-06-28 00:11:08,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 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 00:11:08,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:08,494 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 00:11:08,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 00:11:08,494 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:08,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:08,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1108823712, now seen corresponding path program 16 times [2024-06-28 00:11:08,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:08,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008563454] [2024-06-28 00:11:08,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:08,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:08,980 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 00:11:08,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:08,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008563454] [2024-06-28 00:11:08,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008563454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:08,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:08,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:08,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863090395] [2024-06-28 00:11:08,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:08,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:08,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:08,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:08,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:09,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:11:09,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 545 transitions, 10127 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:11:09,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:09,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:11:09,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:11,128 INFO L124 PetriNetUnfolderBase]: 4025/7356 cut-off events. [2024-06-28 00:11:11,128 INFO L125 PetriNetUnfolderBase]: For 1243346/1243346 co-relation queries the response was YES. [2024-06-28 00:11:11,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68056 conditions, 7356 events. 4025/7356 cut-off events. For 1243346/1243346 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 60693 event pairs, 1040 based on Foata normal form. 9/7264 useless extension candidates. Maximal degree in co-relation 67845. Up to 6194 conditions per place. [2024-06-28 00:11:11,264 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 503 selfloop transitions, 52 changer transitions 0/563 dead transitions. [2024-06-28 00:11:11,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 563 transitions, 11401 flow [2024-06-28 00:11:11,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:11,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-28 00:11:11,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-28 00:11:11,265 INFO L175 Difference]: Start difference. First operand has 479 places, 545 transitions, 10127 flow. Second operand 8 states and 170 transitions. [2024-06-28 00:11:11,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 563 transitions, 11401 flow [2024-06-28 00:11:17,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 563 transitions, 11092 flow, removed 79 selfloop flow, removed 5 redundant places. [2024-06-28 00:11:17,351 INFO L231 Difference]: Finished difference. Result has 482 places, 546 transitions, 9982 flow [2024-06-28 00:11:17,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9818, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9982, PETRI_PLACES=482, PETRI_TRANSITIONS=546} [2024-06-28 00:11:17,352 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-28 00:11:17,352 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 546 transitions, 9982 flow [2024-06-28 00:11:17,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:11:17,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:17,352 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 00:11:17,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 00:11:17,353 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:17,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:17,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1116175145, now seen corresponding path program 24 times [2024-06-28 00:11:17,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:17,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872965195] [2024-06-28 00:11:17,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:17,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:18,231 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 00:11:18,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:18,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872965195] [2024-06-28 00:11:18,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872965195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:18,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:18,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:18,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104682110] [2024-06-28 00:11:18,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:18,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:18,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:18,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:18,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:18,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:11:18,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 546 transitions, 9982 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:11:18,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:18,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:11:18,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:20,326 INFO L124 PetriNetUnfolderBase]: 4012/7341 cut-off events. [2024-06-28 00:11:20,326 INFO L125 PetriNetUnfolderBase]: For 1200390/1200390 co-relation queries the response was YES. [2024-06-28 00:11:20,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66818 conditions, 7341 events. 4012/7341 cut-off events. For 1200390/1200390 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 60601 event pairs, 1000 based on Foata normal form. 6/7255 useless extension candidates. Maximal degree in co-relation 66606. Up to 5863 conditions per place. [2024-06-28 00:11:20,464 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 486 selfloop transitions, 72 changer transitions 0/566 dead transitions. [2024-06-28 00:11:20,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 566 transitions, 11468 flow [2024-06-28 00:11:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:20,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 173 transitions. [2024-06-28 00:11:20,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540625 [2024-06-28 00:11:20,465 INFO L175 Difference]: Start difference. First operand has 482 places, 546 transitions, 9982 flow. Second operand 8 states and 173 transitions. [2024-06-28 00:11:20,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 566 transitions, 11468 flow [2024-06-28 00:11:26,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 566 transitions, 11328 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 00:11:26,371 INFO L231 Difference]: Finished difference. Result has 484 places, 546 transitions, 9991 flow [2024-06-28 00:11:26,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9842, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9991, PETRI_PLACES=484, PETRI_TRANSITIONS=546} [2024-06-28 00:11:26,371 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-28 00:11:26,371 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 546 transitions, 9991 flow [2024-06-28 00:11:26,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:11:26,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:26,372 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 00:11:26,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 00:11:26,372 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:26,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:26,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1108817915, now seen corresponding path program 25 times [2024-06-28 00:11:26,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:26,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976419202] [2024-06-28 00:11:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:26,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:26,998 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 00:11:26,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:26,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976419202] [2024-06-28 00:11:26,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976419202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:26,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:26,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:26,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998536509] [2024-06-28 00:11:26,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:26,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:26,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:26,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:26,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:27,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:11:27,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 546 transitions, 9991 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:11:27,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:27,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:11:27,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:29,026 INFO L124 PetriNetUnfolderBase]: 4019/7366 cut-off events. [2024-06-28 00:11:29,026 INFO L125 PetriNetUnfolderBase]: For 1204389/1204389 co-relation queries the response was YES. [2024-06-28 00:11:29,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66789 conditions, 7366 events. 4019/7366 cut-off events. For 1204389/1204389 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 61112 event pairs, 1036 based on Foata normal form. 6/7276 useless extension candidates. Maximal degree in co-relation 66576. Up to 6188 conditions per place. [2024-06-28 00:11:29,175 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 503 selfloop transitions, 52 changer transitions 0/563 dead transitions. [2024-06-28 00:11:29,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 563 transitions, 11225 flow [2024-06-28 00:11:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:29,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-06-28 00:11:29,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-28 00:11:29,176 INFO L175 Difference]: Start difference. First operand has 484 places, 546 transitions, 9991 flow. Second operand 8 states and 168 transitions. [2024-06-28 00:11:29,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 563 transitions, 11225 flow [2024-06-28 00:11:36,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 563 transitions, 10785 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 00:11:36,224 INFO L231 Difference]: Finished difference. Result has 482 places, 547 transitions, 9701 flow [2024-06-28 00:11:36,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9555, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9701, PETRI_PLACES=482, PETRI_TRANSITIONS=547} [2024-06-28 00:11:36,225 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-28 00:11:36,226 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 547 transitions, 9701 flow [2024-06-28 00:11:36,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 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 00:11:36,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:36,226 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 00:11:36,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 00:11:36,226 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:36,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:36,227 INFO L85 PathProgramCache]: Analyzing trace with hash -34308448, now seen corresponding path program 12 times [2024-06-28 00:11:36,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:36,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476236031] [2024-06-28 00:11:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:36,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:36,844 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 00:11:36,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:36,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476236031] [2024-06-28 00:11:36,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476236031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:36,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:36,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:11:36,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549667386] [2024-06-28 00:11:36,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:36,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:11:36,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:36,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:11:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:11:36,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:11:36,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 547 transitions, 9701 flow. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 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 00:11:36,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:36,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:11:36,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:39,096 INFO L124 PetriNetUnfolderBase]: 4011/7351 cut-off events. [2024-06-28 00:11:39,097 INFO L125 PetriNetUnfolderBase]: For 1175831/1175831 co-relation queries the response was YES. [2024-06-28 00:11:39,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65119 conditions, 7351 events. 4011/7351 cut-off events. For 1175831/1175831 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 60850 event pairs, 993 based on Foata normal form. 4/7257 useless extension candidates. Maximal degree in co-relation 64907. Up to 6061 conditions per place. [2024-06-28 00:11:39,221 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 510 selfloop transitions, 48 changer transitions 0/565 dead transitions. [2024-06-28 00:11:39,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 565 transitions, 10925 flow [2024-06-28 00:11:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:39,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:39,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 00:11:39,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496875 [2024-06-28 00:11:39,222 INFO L175 Difference]: Start difference. First operand has 482 places, 547 transitions, 9701 flow. Second operand 8 states and 159 transitions. [2024-06-28 00:11:39,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 565 transitions, 10925 flow [2024-06-28 00:11:46,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 565 transitions, 10787 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 00:11:46,671 INFO L231 Difference]: Finished difference. Result has 484 places, 547 transitions, 9671 flow [2024-06-28 00:11:46,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9563, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9671, PETRI_PLACES=484, PETRI_TRANSITIONS=547} [2024-06-28 00:11:46,672 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-28 00:11:46,672 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 547 transitions, 9671 flow [2024-06-28 00:11:46,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 8 states have internal predecessors, (120), 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 00:11:46,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:46,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:46,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 00:11:46,673 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:46,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1850701774, now seen corresponding path program 1 times [2024-06-28 00:11:46,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:46,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157407245] [2024-06-28 00:11:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:46,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:47,422 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 00:11:47,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:47,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157407245] [2024-06-28 00:11:47,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157407245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:47,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:47,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:47,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688474462] [2024-06-28 00:11:47,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:47,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:47,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:47,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:47,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:11:47,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 547 transitions, 9671 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:11:47,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:47,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:11:47,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:11:49,545 INFO L124 PetriNetUnfolderBase]: 4054/7452 cut-off events. [2024-06-28 00:11:49,545 INFO L125 PetriNetUnfolderBase]: For 1285101/1285101 co-relation queries the response was YES. [2024-06-28 00:11:49,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65488 conditions, 7452 events. 4054/7452 cut-off events. For 1285101/1285101 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 62171 event pairs, 880 based on Foata normal form. 20/7387 useless extension candidates. Maximal degree in co-relation 65275. Up to 5857 conditions per place. [2024-06-28 00:11:49,691 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 501 selfloop transitions, 45 changer transitions 24/578 dead transitions. [2024-06-28 00:11:49,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 578 transitions, 10967 flow [2024-06-28 00:11:49,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:11:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:11:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 00:11:49,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 00:11:49,693 INFO L175 Difference]: Start difference. First operand has 484 places, 547 transitions, 9671 flow. Second operand 8 states and 180 transitions. [2024-06-28 00:11:49,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 578 transitions, 10967 flow [2024-06-28 00:11:57,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 578 transitions, 10762 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 00:11:57,426 INFO L231 Difference]: Finished difference. Result has 484 places, 535 transitions, 9427 flow [2024-06-28 00:11:57,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9466, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9427, PETRI_PLACES=484, PETRI_TRANSITIONS=535} [2024-06-28 00:11:57,427 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-28 00:11:57,427 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 535 transitions, 9427 flow [2024-06-28 00:11:57,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:11:57,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:11:57,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:11:57,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 00:11:57,428 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:11:57,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:11:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1846237774, now seen corresponding path program 2 times [2024-06-28 00:11:57,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:11:57,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351305855] [2024-06-28 00:11:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:11:57,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:11:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:11:58,277 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 00:11:58,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:11:58,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351305855] [2024-06-28 00:11:58,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351305855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:11:58,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:11:58,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:11:58,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428156633] [2024-06-28 00:11:58,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:11:58,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:11:58,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:11:58,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:11:58,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:11:58,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:11:58,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 535 transitions, 9427 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:11:58,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:11:58,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:11:58,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:00,428 INFO L124 PetriNetUnfolderBase]: 4008/7376 cut-off events. [2024-06-28 00:12:00,428 INFO L125 PetriNetUnfolderBase]: For 1377202/1377202 co-relation queries the response was YES. [2024-06-28 00:12:00,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67196 conditions, 7376 events. 4008/7376 cut-off events. For 1377202/1377202 co-relation queries the response was YES. Maximal size of possible extension queue 693. Compared 61501 event pairs, 957 based on Foata normal form. 18/7306 useless extension candidates. Maximal degree in co-relation 66984. Up to 5687 conditions per place. [2024-06-28 00:12:00,562 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 489 selfloop transitions, 58 changer transitions 17/572 dead transitions. [2024-06-28 00:12:00,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 572 transitions, 11079 flow [2024-06-28 00:12:00,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:12:00,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:12:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-28 00:12:00,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-28 00:12:00,564 INFO L175 Difference]: Start difference. First operand has 484 places, 535 transitions, 9427 flow. Second operand 9 states and 204 transitions. [2024-06-28 00:12:00,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 572 transitions, 11079 flow [2024-06-28 00:12:06,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 572 transitions, 10933 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:12:06,564 INFO L231 Difference]: Finished difference. Result has 483 places, 531 transitions, 9323 flow [2024-06-28 00:12:06,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9285, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9323, PETRI_PLACES=483, PETRI_TRANSITIONS=531} [2024-06-28 00:12:06,564 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 442 predicate places. [2024-06-28 00:12:06,564 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 531 transitions, 9323 flow [2024-06-28 00:12:06,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:12:06,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:06,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:06,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 00:12:06,565 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:06,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:06,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1685766552, now seen corresponding path program 1 times [2024-06-28 00:12:06,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:06,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224373825] [2024-06-28 00:12:06,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:06,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:07,453 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 00:12:07,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:07,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224373825] [2024-06-28 00:12:07,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224373825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:07,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:07,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:07,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884312282] [2024-06-28 00:12:07,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:07,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:07,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:07,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:07,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:07,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:12:07,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 531 transitions, 9323 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:12:07,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:07,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:12:07,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:09,513 INFO L124 PetriNetUnfolderBase]: 3929/7245 cut-off events. [2024-06-28 00:12:09,514 INFO L125 PetriNetUnfolderBase]: For 1260803/1260803 co-relation queries the response was YES. [2024-06-28 00:12:09,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65957 conditions, 7245 events. 3929/7245 cut-off events. For 1260803/1260803 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 60173 event pairs, 925 based on Foata normal form. 4/7155 useless extension candidates. Maximal degree in co-relation 65746. Up to 5772 conditions per place. [2024-06-28 00:12:09,651 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 489 selfloop transitions, 61 changer transitions 0/558 dead transitions. [2024-06-28 00:12:09,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 558 transitions, 10593 flow [2024-06-28 00:12:09,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:09,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:09,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 00:12:09,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.559375 [2024-06-28 00:12:09,652 INFO L175 Difference]: Start difference. First operand has 483 places, 531 transitions, 9323 flow. Second operand 8 states and 179 transitions. [2024-06-28 00:12:09,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 558 transitions, 10593 flow [2024-06-28 00:12:16,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 558 transitions, 10455 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 00:12:16,085 INFO L231 Difference]: Finished difference. Result has 479 places, 532 transitions, 9369 flow [2024-06-28 00:12:16,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9185, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9369, PETRI_PLACES=479, PETRI_TRANSITIONS=532} [2024-06-28 00:12:16,086 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-28 00:12:16,086 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 532 transitions, 9369 flow [2024-06-28 00:12:16,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:12:16,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:16,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:16,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 00:12:16,087 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:16,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:16,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1685773248, now seen corresponding path program 3 times [2024-06-28 00:12:16,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:16,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562674085] [2024-06-28 00:12:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:16,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:17,022 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 00:12:17,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:17,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562674085] [2024-06-28 00:12:17,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562674085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:17,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:17,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:12:17,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4677206] [2024-06-28 00:12:17,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:17,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:12:17,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:12:17,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:12:17,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:12:17,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 532 transitions, 9369 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 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 00:12:17,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:17,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:12:17,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:19,421 INFO L124 PetriNetUnfolderBase]: 3977/7342 cut-off events. [2024-06-28 00:12:19,421 INFO L125 PetriNetUnfolderBase]: For 1336059/1336059 co-relation queries the response was YES. [2024-06-28 00:12:19,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66462 conditions, 7342 events. 3977/7342 cut-off events. For 1336059/1336059 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 61396 event pairs, 986 based on Foata normal form. 18/7277 useless extension candidates. Maximal degree in co-relation 66251. Up to 5940 conditions per place. [2024-06-28 00:12:19,544 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 499 selfloop transitions, 49 changer transitions 12/567 dead transitions. [2024-06-28 00:12:19,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 567 transitions, 10703 flow [2024-06-28 00:12:19,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:12:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:12:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-28 00:12:19,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022727272727273 [2024-06-28 00:12:19,545 INFO L175 Difference]: Start difference. First operand has 479 places, 532 transitions, 9369 flow. Second operand 11 states and 221 transitions. [2024-06-28 00:12:19,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 567 transitions, 10703 flow [2024-06-28 00:12:25,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 567 transitions, 10539 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 00:12:25,455 INFO L231 Difference]: Finished difference. Result has 483 places, 530 transitions, 9276 flow [2024-06-28 00:12:25,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9205, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9276, PETRI_PLACES=483, PETRI_TRANSITIONS=530} [2024-06-28 00:12:25,456 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 442 predicate places. [2024-06-28 00:12:25,456 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 530 transitions, 9276 flow [2024-06-28 00:12:25,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 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 00:12:25,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:25,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:25,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 00:12:25,457 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:25,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:25,457 INFO L85 PathProgramCache]: Analyzing trace with hash -333196330, now seen corresponding path program 4 times [2024-06-28 00:12:25,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:25,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076508211] [2024-06-28 00:12:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:25,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:25,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:26,391 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 00:12:26,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:26,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076508211] [2024-06-28 00:12:26,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076508211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:26,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:26,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:26,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252393907] [2024-06-28 00:12:26,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:26,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:26,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:26,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:26,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:26,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:12:26,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 530 transitions, 9276 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:12:26,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:26,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:12:26,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:28,485 INFO L124 PetriNetUnfolderBase]: 3929/7189 cut-off events. [2024-06-28 00:12:28,486 INFO L125 PetriNetUnfolderBase]: For 1228571/1228571 co-relation queries the response was YES. [2024-06-28 00:12:28,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65529 conditions, 7189 events. 3929/7189 cut-off events. For 1228571/1228571 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 59107 event pairs, 807 based on Foata normal form. 2/7135 useless extension candidates. Maximal degree in co-relation 65318. Up to 5131 conditions per place. [2024-06-28 00:12:28,617 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 451 selfloop transitions, 100 changer transitions 0/559 dead transitions. [2024-06-28 00:12:28,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 559 transitions, 10536 flow [2024-06-28 00:12:28,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:28,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-06-28 00:12:28,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.559375 [2024-06-28 00:12:28,618 INFO L175 Difference]: Start difference. First operand has 483 places, 530 transitions, 9276 flow. Second operand 8 states and 179 transitions. [2024-06-28 00:12:28,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 559 transitions, 10536 flow [2024-06-28 00:12:34,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 559 transitions, 10452 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:12:34,199 INFO L231 Difference]: Finished difference. Result has 480 places, 534 transitions, 9504 flow [2024-06-28 00:12:34,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9192, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9504, PETRI_PLACES=480, PETRI_TRANSITIONS=534} [2024-06-28 00:12:34,199 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-28 00:12:34,199 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 534 transitions, 9504 flow [2024-06-28 00:12:34,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:12:34,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:34,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:34,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 00:12:34,200 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:34,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:34,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1346316346, now seen corresponding path program 2 times [2024-06-28 00:12:34,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:34,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063212188] [2024-06-28 00:12:34,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:34,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:35,355 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 00:12:35,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:35,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063212188] [2024-06-28 00:12:35,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063212188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:35,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:35,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:35,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677630257] [2024-06-28 00:12:35,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:35,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:35,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:35,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:35,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:35,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:12:35,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 534 transitions, 9504 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:12:35,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:35,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:12:35,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:37,563 INFO L124 PetriNetUnfolderBase]: 3981/7327 cut-off events. [2024-06-28 00:12:37,563 INFO L125 PetriNetUnfolderBase]: For 1303915/1303915 co-relation queries the response was YES. [2024-06-28 00:12:37,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68161 conditions, 7327 events. 3981/7327 cut-off events. For 1303915/1303915 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 60924 event pairs, 904 based on Foata normal form. 4/7237 useless extension candidates. Maximal degree in co-relation 67951. Up to 5396 conditions per place. [2024-06-28 00:12:37,700 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 460 selfloop transitions, 101 changer transitions 0/569 dead transitions. [2024-06-28 00:12:37,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 569 transitions, 11373 flow [2024-06-28 00:12:37,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:12:37,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:12:37,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-28 00:12:37,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.584375 [2024-06-28 00:12:37,701 INFO L175 Difference]: Start difference. First operand has 480 places, 534 transitions, 9504 flow. Second operand 8 states and 187 transitions. [2024-06-28 00:12:37,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 569 transitions, 11373 flow [2024-06-28 00:12:43,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 569 transitions, 11134 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-28 00:12:43,352 INFO L231 Difference]: Finished difference. Result has 483 places, 537 transitions, 9613 flow [2024-06-28 00:12:43,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9265, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9613, PETRI_PLACES=483, PETRI_TRANSITIONS=537} [2024-06-28 00:12:43,352 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 442 predicate places. [2024-06-28 00:12:43,352 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 537 transitions, 9613 flow [2024-06-28 00:12:43,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:12:43,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:43,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:43,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 00:12:43,353 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:43,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:43,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2020832148, now seen corresponding path program 5 times [2024-06-28 00:12:43,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:43,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335920429] [2024-06-28 00:12:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:43,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:44,229 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 00:12:44,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:44,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335920429] [2024-06-28 00:12:44,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335920429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:44,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:44,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:44,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448121646] [2024-06-28 00:12:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:44,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:44,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:44,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:44,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:44,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:12:44,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 537 transitions, 9613 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:12:44,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:44,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:12:44,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:46,811 INFO L124 PetriNetUnfolderBase]: 4179/7687 cut-off events. [2024-06-28 00:12:46,811 INFO L125 PetriNetUnfolderBase]: For 1591418/1591418 co-relation queries the response was YES. [2024-06-28 00:12:46,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75487 conditions, 7687 events. 4179/7687 cut-off events. For 1591418/1591418 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 64574 event pairs, 897 based on Foata normal form. 2/7596 useless extension candidates. Maximal degree in co-relation 75276. Up to 4588 conditions per place. [2024-06-28 00:12:46,939 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 467 selfloop transitions, 110 changer transitions 0/585 dead transitions. [2024-06-28 00:12:46,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 585 transitions, 11958 flow [2024-06-28 00:12:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:12:46,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:12:46,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 00:12:46,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 00:12:46,941 INFO L175 Difference]: Start difference. First operand has 483 places, 537 transitions, 9613 flow. Second operand 9 states and 210 transitions. [2024-06-28 00:12:46,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 585 transitions, 11958 flow [2024-06-28 00:12:53,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 585 transitions, 11790 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 00:12:53,085 INFO L231 Difference]: Finished difference. Result has 489 places, 547 transitions, 10032 flow [2024-06-28 00:12:53,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9445, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10032, PETRI_PLACES=489, PETRI_TRANSITIONS=547} [2024-06-28 00:12:53,085 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 448 predicate places. [2024-06-28 00:12:53,085 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 547 transitions, 10032 flow [2024-06-28 00:12:53,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:12:53,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:12:53,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:12:53,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 00:12:53,086 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:12:53,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:12:53,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044958, now seen corresponding path program 6 times [2024-06-28 00:12:53,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:12:53,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863147680] [2024-06-28 00:12:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:12:53,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:12:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:12:54,148 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 00:12:54,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:12:54,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863147680] [2024-06-28 00:12:54,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863147680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:12:54,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:12:54,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:12:54,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700774980] [2024-06-28 00:12:54,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:12:54,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:12:54,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:12:54,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:12:54,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:12:54,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:12:54,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 547 transitions, 10032 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:12:54,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:12:54,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:12:54,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:12:56,784 INFO L124 PetriNetUnfolderBase]: 4496/8311 cut-off events. [2024-06-28 00:12:56,784 INFO L125 PetriNetUnfolderBase]: For 2144184/2144184 co-relation queries the response was YES. [2024-06-28 00:12:56,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87430 conditions, 8311 events. 4496/8311 cut-off events. For 2144184/2144184 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 70889 event pairs, 882 based on Foata normal form. 16/8233 useless extension candidates. Maximal degree in co-relation 87217. Up to 4788 conditions per place. [2024-06-28 00:12:56,946 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 462 selfloop transitions, 125 changer transitions 0/595 dead transitions. [2024-06-28 00:12:56,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 595 transitions, 12211 flow [2024-06-28 00:12:56,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:12:56,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:12:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 224 transitions. [2024-06-28 00:12:56,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-28 00:12:56,948 INFO L175 Difference]: Start difference. First operand has 489 places, 547 transitions, 10032 flow. Second operand 10 states and 224 transitions. [2024-06-28 00:12:56,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 595 transitions, 12211 flow [2024-06-28 00:13:06,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 595 transitions, 11867 flow, removed 138 selfloop flow, removed 3 redundant places. [2024-06-28 00:13:06,150 INFO L231 Difference]: Finished difference. Result has 497 places, 555 transitions, 10287 flow [2024-06-28 00:13:06,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9736, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10287, PETRI_PLACES=497, PETRI_TRANSITIONS=555} [2024-06-28 00:13:06,150 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-28 00:13:06,150 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 555 transitions, 10287 flow [2024-06-28 00:13:06,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:13:06,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:06,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:06,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 00:13:06,151 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:06,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:06,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1517716668, now seen corresponding path program 7 times [2024-06-28 00:13:06,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:06,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194792891] [2024-06-28 00:13:06,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:06,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:07,210 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 00:13:07,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:07,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194792891] [2024-06-28 00:13:07,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194792891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:07,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:07,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:13:07,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578896358] [2024-06-28 00:13:07,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:07,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:13:07,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:07,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:13:07,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:13:07,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:13:07,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 555 transitions, 10287 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:13:07,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:07,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:13:07,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:09,901 INFO L124 PetriNetUnfolderBase]: 4425/8204 cut-off events. [2024-06-28 00:13:09,902 INFO L125 PetriNetUnfolderBase]: For 2048597/2048597 co-relation queries the response was YES. [2024-06-28 00:13:10,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81781 conditions, 8204 events. 4425/8204 cut-off events. For 2048597/2048597 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 70281 event pairs, 907 based on Foata normal form. 38/8156 useless extension candidates. Maximal degree in co-relation 81565. Up to 4788 conditions per place. [2024-06-28 00:13:10,067 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 469 selfloop transitions, 108 changer transitions 0/585 dead transitions. [2024-06-28 00:13:10,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 585 transitions, 11903 flow [2024-06-28 00:13:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:13:10,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:13:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 00:13:10,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-06-28 00:13:10,068 INFO L175 Difference]: Start difference. First operand has 497 places, 555 transitions, 10287 flow. Second operand 8 states and 182 transitions. [2024-06-28 00:13:10,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 585 transitions, 11903 flow [2024-06-28 00:13:18,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 585 transitions, 11475 flow, removed 114 selfloop flow, removed 7 redundant places. [2024-06-28 00:13:18,168 INFO L231 Difference]: Finished difference. Result has 498 places, 555 transitions, 10100 flow [2024-06-28 00:13:18,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9859, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10100, PETRI_PLACES=498, PETRI_TRANSITIONS=555} [2024-06-28 00:13:18,169 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 457 predicate places. [2024-06-28 00:13:18,169 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 555 transitions, 10100 flow [2024-06-28 00:13:18,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:13:18,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:18,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:18,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 00:13:18,169 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:18,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:18,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1514003922, now seen corresponding path program 3 times [2024-06-28 00:13:18,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:18,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843239373] [2024-06-28 00:13:18,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:18,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:19,469 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 00:13:19,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843239373] [2024-06-28 00:13:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843239373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:19,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:19,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:13:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471107013] [2024-06-28 00:13:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:19,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:13:19,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:13:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:13:19,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:13:19,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 555 transitions, 10100 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 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 00:13:19,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:19,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:13:19,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:22,108 INFO L124 PetriNetUnfolderBase]: 4417/8210 cut-off events. [2024-06-28 00:13:22,108 INFO L125 PetriNetUnfolderBase]: For 1800960/1800960 co-relation queries the response was YES. [2024-06-28 00:13:22,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80249 conditions, 8210 events. 4417/8210 cut-off events. For 1800960/1800960 co-relation queries the response was YES. Maximal size of possible extension queue 760. Compared 70394 event pairs, 1219 based on Foata normal form. 4/8124 useless extension candidates. Maximal degree in co-relation 80032. Up to 6233 conditions per place. [2024-06-28 00:13:22,253 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 519 selfloop transitions, 65 changer transitions 0/591 dead transitions. [2024-06-28 00:13:22,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 591 transitions, 11673 flow [2024-06-28 00:13:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:13:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:13:22,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 208 transitions. [2024-06-28 00:13:22,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2024-06-28 00:13:22,254 INFO L175 Difference]: Start difference. First operand has 498 places, 555 transitions, 10100 flow. Second operand 10 states and 208 transitions. [2024-06-28 00:13:22,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 591 transitions, 11673 flow [2024-06-28 00:13:30,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 591 transitions, 11443 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 00:13:30,124 INFO L231 Difference]: Finished difference. Result has 501 places, 555 transitions, 10006 flow [2024-06-28 00:13:30,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9870, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10006, PETRI_PLACES=501, PETRI_TRANSITIONS=555} [2024-06-28 00:13:30,125 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 460 predicate places. [2024-06-28 00:13:30,125 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 555 transitions, 10006 flow [2024-06-28 00:13:30,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 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 00:13:30,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:30,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:30,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 00:13:30,126 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:30,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:30,126 INFO L85 PathProgramCache]: Analyzing trace with hash -569048462, now seen corresponding path program 8 times [2024-06-28 00:13:30,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:30,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556398018] [2024-06-28 00:13:30,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:30,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:31,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:13:31,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:31,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556398018] [2024-06-28 00:13:31,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556398018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:31,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:31,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:13:31,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589919452] [2024-06-28 00:13:31,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:31,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:13:31,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:31,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:13:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:13:31,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:13:31,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 555 transitions, 10006 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:13:31,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:31,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:13:31,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:33,682 INFO L124 PetriNetUnfolderBase]: 4450/8283 cut-off events. [2024-06-28 00:13:33,682 INFO L125 PetriNetUnfolderBase]: For 1874856/1874856 co-relation queries the response was YES. [2024-06-28 00:13:33,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80835 conditions, 8283 events. 4450/8283 cut-off events. For 1874856/1874856 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 71197 event pairs, 1005 based on Foata normal form. 6/8175 useless extension candidates. Maximal degree in co-relation 80617. Up to 4717 conditions per place. [2024-06-28 00:13:33,866 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 489 selfloop transitions, 100 changer transitions 1/598 dead transitions. [2024-06-28 00:13:33,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 598 transitions, 12251 flow [2024-06-28 00:13:33,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:13:33,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:13:33,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-28 00:13:33,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 00:13:33,868 INFO L175 Difference]: Start difference. First operand has 501 places, 555 transitions, 10006 flow. Second operand 9 states and 210 transitions. [2024-06-28 00:13:33,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 598 transitions, 12251 flow [2024-06-28 00:13:41,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 598 transitions, 12146 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 00:13:41,985 INFO L231 Difference]: Finished difference. Result has 503 places, 559 transitions, 10240 flow [2024-06-28 00:13:41,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9907, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10240, PETRI_PLACES=503, PETRI_TRANSITIONS=559} [2024-06-28 00:13:41,986 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-28 00:13:41,986 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 559 transitions, 10240 flow [2024-06-28 00:13:41,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:13:41,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:41,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:41,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 00:13:41,987 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:41,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:41,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1362707284, now seen corresponding path program 9 times [2024-06-28 00:13:41,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:41,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96074213] [2024-06-28 00:13:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:41,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:42,856 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 00:13:42,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:42,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96074213] [2024-06-28 00:13:42,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96074213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:42,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:42,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:13:42,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767776702] [2024-06-28 00:13:42,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:42,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:13:42,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:42,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:13:42,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:13:43,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:13:43,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 559 transitions, 10240 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:13:43,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:43,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:13:43,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:45,553 INFO L124 PetriNetUnfolderBase]: 4485/8365 cut-off events. [2024-06-28 00:13:45,553 INFO L125 PetriNetUnfolderBase]: For 1935661/1935661 co-relation queries the response was YES. [2024-06-28 00:13:45,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81177 conditions, 8365 events. 4485/8365 cut-off events. For 1935661/1935661 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 72286 event pairs, 1064 based on Foata normal form. 18/8272 useless extension candidates. Maximal degree in co-relation 80960. Up to 4717 conditions per place. [2024-06-28 00:13:45,730 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 496 selfloop transitions, 96 changer transitions 1/601 dead transitions. [2024-06-28 00:13:45,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 601 transitions, 12441 flow [2024-06-28 00:13:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:13:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:13:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-28 00:13:45,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-28 00:13:45,731 INFO L175 Difference]: Start difference. First operand has 503 places, 559 transitions, 10240 flow. Second operand 9 states and 212 transitions. [2024-06-28 00:13:45,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 601 transitions, 12441 flow [2024-06-28 00:13:52,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 601 transitions, 12181 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-06-28 00:13:52,261 INFO L231 Difference]: Finished difference. Result has 507 places, 559 transitions, 10178 flow [2024-06-28 00:13:52,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9980, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10178, PETRI_PLACES=507, PETRI_TRANSITIONS=559} [2024-06-28 00:13:52,262 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 466 predicate places. [2024-06-28 00:13:52,262 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 559 transitions, 10178 flow [2024-06-28 00:13:52,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:13:52,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:13:52,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:13:52,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 00:13:52,262 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:13:52,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:13:52,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1370107068, now seen corresponding path program 10 times [2024-06-28 00:13:52,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:13:52,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190525623] [2024-06-28 00:13:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:13:52,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:13:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:13:53,157 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 00:13:53,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:13:53,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190525623] [2024-06-28 00:13:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190525623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:13:53,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:13:53,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:13:53,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301074782] [2024-06-28 00:13:53,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:13:53,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:13:53,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:13:53,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:13:53,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:13:53,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:13:53,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 559 transitions, 10178 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:13:53,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:13:53,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:13:53,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:13:56,040 INFO L124 PetriNetUnfolderBase]: 4715/8814 cut-off events. [2024-06-28 00:13:56,040 INFO L125 PetriNetUnfolderBase]: For 2242116/2242116 co-relation queries the response was YES. [2024-06-28 00:13:56,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88295 conditions, 8814 events. 4715/8814 cut-off events. For 2242116/2242116 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 77025 event pairs, 1356 based on Foata normal form. 18/8704 useless extension candidates. Maximal degree in co-relation 88077. Up to 6674 conditions per place. [2024-06-28 00:13:56,230 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 510 selfloop transitions, 78 changer transitions 0/596 dead transitions. [2024-06-28 00:13:56,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 596 transitions, 12198 flow [2024-06-28 00:13:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:13:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:13:56,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 202 transitions. [2024-06-28 00:13:56,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611111111111111 [2024-06-28 00:13:56,231 INFO L175 Difference]: Start difference. First operand has 507 places, 559 transitions, 10178 flow. Second operand 9 states and 202 transitions. [2024-06-28 00:13:56,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 596 transitions, 12198 flow [2024-06-28 00:14:04,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 596 transitions, 12004 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 00:14:04,809 INFO L231 Difference]: Finished difference. Result has 509 places, 561 transitions, 10212 flow [2024-06-28 00:14:04,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9984, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10212, PETRI_PLACES=509, PETRI_TRANSITIONS=561} [2024-06-28 00:14:04,810 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-28 00:14:04,810 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 561 transitions, 10212 flow [2024-06-28 00:14:04,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:14:04,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:04,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:04,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 00:14:04,810 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:04,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:04,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1369899275, now seen corresponding path program 1 times [2024-06-28 00:14:04,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:04,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339809552] [2024-06-28 00:14:04,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:04,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:05,527 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 00:14:05,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:05,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339809552] [2024-06-28 00:14:05,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339809552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:05,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:05,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:05,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027499562] [2024-06-28 00:14:05,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:05,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:05,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:05,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:14:05,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 561 transitions, 10212 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:14:05,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:05,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:14:05,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:08,593 INFO L124 PetriNetUnfolderBase]: 4695/8745 cut-off events. [2024-06-28 00:14:08,593 INFO L125 PetriNetUnfolderBase]: For 2160064/2160064 co-relation queries the response was YES. [2024-06-28 00:14:08,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86675 conditions, 8745 events. 4695/8745 cut-off events. For 2160064/2160064 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 76234 event pairs, 1394 based on Foata normal form. 18/8632 useless extension candidates. Maximal degree in co-relation 86456. Up to 7000 conditions per place. [2024-06-28 00:14:08,762 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 503 selfloop transitions, 69 changer transitions 11/591 dead transitions. [2024-06-28 00:14:08,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 591 transitions, 11672 flow [2024-06-28 00:14:08,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:14:08,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:14:08,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 182 transitions. [2024-06-28 00:14:08,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2024-06-28 00:14:08,764 INFO L175 Difference]: Start difference. First operand has 509 places, 561 transitions, 10212 flow. Second operand 8 states and 182 transitions. [2024-06-28 00:14:08,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 591 transitions, 11672 flow [2024-06-28 00:14:18,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 591 transitions, 11466 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 00:14:18,390 INFO L231 Difference]: Finished difference. Result has 510 places, 554 transitions, 10046 flow [2024-06-28 00:14:18,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10006, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10046, PETRI_PLACES=510, PETRI_TRANSITIONS=554} [2024-06-28 00:14:18,391 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 469 predicate places. [2024-06-28 00:14:18,391 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 554 transitions, 10046 flow [2024-06-28 00:14:18,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:14:18,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:18,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:18,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 00:14:18,392 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:18,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:18,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1218609178, now seen corresponding path program 4 times [2024-06-28 00:14:18,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:18,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478753416] [2024-06-28 00:14:18,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:18,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:19,589 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 00:14:19,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:19,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478753416] [2024-06-28 00:14:19,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478753416] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:19,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:19,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:19,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676795881] [2024-06-28 00:14:19,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:19,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:19,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:19,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:19,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:19,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:14:19,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 554 transitions, 10046 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:14:19,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:19,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:14:19,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:22,618 INFO L124 PetriNetUnfolderBase]: 4441/8297 cut-off events. [2024-06-28 00:14:22,618 INFO L125 PetriNetUnfolderBase]: For 1830678/1830678 co-relation queries the response was YES. [2024-06-28 00:14:22,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79534 conditions, 8297 events. 4441/8297 cut-off events. For 1830678/1830678 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 71518 event pairs, 1260 based on Foata normal form. 4/8187 useless extension candidates. Maximal degree in co-relation 79314. Up to 6680 conditions per place. [2024-06-28 00:14:22,779 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 504 selfloop transitions, 71 changer transitions 0/583 dead transitions. [2024-06-28 00:14:22,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 583 transitions, 11672 flow [2024-06-28 00:14:22,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:14:22,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:14:22,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-06-28 00:14:22,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-28 00:14:22,780 INFO L175 Difference]: Start difference. First operand has 510 places, 554 transitions, 10046 flow. Second operand 8 states and 180 transitions. [2024-06-28 00:14:22,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 583 transitions, 11672 flow [2024-06-28 00:14:30,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 583 transitions, 11432 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-28 00:14:30,814 INFO L231 Difference]: Finished difference. Result has 508 places, 560 transitions, 10164 flow [2024-06-28 00:14:30,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9808, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10164, PETRI_PLACES=508, PETRI_TRANSITIONS=560} [2024-06-28 00:14:30,815 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 467 predicate places. [2024-06-28 00:14:30,815 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 560 transitions, 10164 flow [2024-06-28 00:14:30,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:14:30,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:30,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:30,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 00:14:30,816 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:30,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:30,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1218823078, now seen corresponding path program 5 times [2024-06-28 00:14:30,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:30,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087841883] [2024-06-28 00:14:30,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:30,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:32,360 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 00:14:32,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:32,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087841883] [2024-06-28 00:14:32,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087841883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:32,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:32,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:14:32,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336846734] [2024-06-28 00:14:32,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:32,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:14:32,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:32,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:14:32,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:14:32,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:14:32,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 560 transitions, 10164 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 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 00:14:32,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:32,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:14:32,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:35,881 INFO L124 PetriNetUnfolderBase]: 4433/8302 cut-off events. [2024-06-28 00:14:35,882 INFO L125 PetriNetUnfolderBase]: For 1796457/1796457 co-relation queries the response was YES. [2024-06-28 00:14:36,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78805 conditions, 8302 events. 4433/8302 cut-off events. For 1796457/1796457 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 71882 event pairs, 1275 based on Foata normal form. 4/8205 useless extension candidates. Maximal degree in co-relation 78584. Up to 6659 conditions per place. [2024-06-28 00:14:36,040 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 528 selfloop transitions, 54 changer transitions 0/589 dead transitions. [2024-06-28 00:14:36,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 589 transitions, 11648 flow [2024-06-28 00:14:36,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:14:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:14:36,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 204 transitions. [2024-06-28 00:14:36,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-28 00:14:36,042 INFO L175 Difference]: Start difference. First operand has 508 places, 560 transitions, 10164 flow. Second operand 10 states and 204 transitions. [2024-06-28 00:14:36,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 589 transitions, 11648 flow [2024-06-28 00:14:43,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 589 transitions, 11460 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 00:14:43,599 INFO L231 Difference]: Finished difference. Result has 512 places, 560 transitions, 10095 flow [2024-06-28 00:14:43,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9978, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10095, PETRI_PLACES=512, PETRI_TRANSITIONS=560} [2024-06-28 00:14:43,599 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 471 predicate places. [2024-06-28 00:14:43,600 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 560 transitions, 10095 flow [2024-06-28 00:14:43,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 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 00:14:43,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:43,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:43,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 00:14:43,600 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:43,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:43,601 INFO L85 PathProgramCache]: Analyzing trace with hash 679964240, now seen corresponding path program 6 times [2024-06-28 00:14:43,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:43,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607802482] [2024-06-28 00:14:43,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:43,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:44,510 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 00:14:44,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:44,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607802482] [2024-06-28 00:14:44,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607802482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:44,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:44,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:44,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923871559] [2024-06-28 00:14:44,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:44,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:44,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:44,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:44,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:44,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:14:44,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 560 transitions, 10095 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:14:44,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:44,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:14:44,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:47,863 INFO L124 PetriNetUnfolderBase]: 4425/8287 cut-off events. [2024-06-28 00:14:47,863 INFO L125 PetriNetUnfolderBase]: For 1760161/1760161 co-relation queries the response was YES. [2024-06-28 00:14:47,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77746 conditions, 8287 events. 4425/8287 cut-off events. For 1760161/1760161 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 71698 event pairs, 1260 based on Foata normal form. 4/8175 useless extension candidates. Maximal degree in co-relation 77525. Up to 6712 conditions per place. [2024-06-28 00:14:48,009 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 515 selfloop transitions, 59 changer transitions 0/582 dead transitions. [2024-06-28 00:14:48,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 582 transitions, 11297 flow [2024-06-28 00:14:48,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:14:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:14:48,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-06-28 00:14:48,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553125 [2024-06-28 00:14:48,010 INFO L175 Difference]: Start difference. First operand has 512 places, 560 transitions, 10095 flow. Second operand 8 states and 177 transitions. [2024-06-28 00:14:48,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 582 transitions, 11297 flow [2024-06-28 00:14:55,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 582 transitions, 11152 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 00:14:55,134 INFO L231 Difference]: Finished difference. Result has 512 places, 560 transitions, 10075 flow [2024-06-28 00:14:55,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9950, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10075, PETRI_PLACES=512, PETRI_TRANSITIONS=560} [2024-06-28 00:14:55,135 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 471 predicate places. [2024-06-28 00:14:55,135 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 560 transitions, 10075 flow [2024-06-28 00:14:55,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:14:55,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:14:55,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:14:55,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 00:14:55,136 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:14:55,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:14:55,136 INFO L85 PathProgramCache]: Analyzing trace with hash -2120240608, now seen corresponding path program 11 times [2024-06-28 00:14:55,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:14:55,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196331874] [2024-06-28 00:14:55,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:14:55,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:14:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:14:55,920 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 00:14:55,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:14:55,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196331874] [2024-06-28 00:14:55,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196331874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:14:55,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:14:55,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:14:55,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282298184] [2024-06-28 00:14:55,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:14:55,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:14:55,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:14:55,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:14:55,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:14:55,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:14:55,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 560 transitions, 10075 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:14:55,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:14:55,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:14:55,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:14:58,968 INFO L124 PetriNetUnfolderBase]: 4473/8375 cut-off events. [2024-06-28 00:14:58,968 INFO L125 PetriNetUnfolderBase]: For 1860525/1860525 co-relation queries the response was YES. [2024-06-28 00:14:59,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78215 conditions, 8375 events. 4473/8375 cut-off events. For 1860525/1860525 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 72673 event pairs, 1279 based on Foata normal form. 18/8273 useless extension candidates. Maximal degree in co-relation 77995. Up to 6838 conditions per place. [2024-06-28 00:14:59,134 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 509 selfloop transitions, 55 changer transitions 13/585 dead transitions. [2024-06-28 00:14:59,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 585 transitions, 11357 flow [2024-06-28 00:14:59,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:14:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:14:59,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 194 transitions. [2024-06-28 00:14:59,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5388888888888889 [2024-06-28 00:14:59,136 INFO L175 Difference]: Start difference. First operand has 512 places, 560 transitions, 10075 flow. Second operand 9 states and 194 transitions. [2024-06-28 00:14:59,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 585 transitions, 11357 flow [2024-06-28 00:15:05,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 585 transitions, 11214 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:15:05,919 INFO L231 Difference]: Finished difference. Result has 513 places, 556 transitions, 9977 flow [2024-06-28 00:15:05,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9932, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9977, PETRI_PLACES=513, PETRI_TRANSITIONS=556} [2024-06-28 00:15:05,920 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 472 predicate places. [2024-06-28 00:15:05,920 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 556 transitions, 9977 flow [2024-06-28 00:15:05,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:15:05,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:05,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:05,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 00:15:05,920 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:05,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:05,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1218823264, now seen corresponding path program 12 times [2024-06-28 00:15:05,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:05,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41395228] [2024-06-28 00:15:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:05,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:06,813 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 00:15:06,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:06,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41395228] [2024-06-28 00:15:06,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41395228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:06,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:06,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:06,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548449896] [2024-06-28 00:15:06,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:06,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:06,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:06,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:06,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:15:06,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 556 transitions, 9977 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:15:06,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:06,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:15:06,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:10,149 INFO L124 PetriNetUnfolderBase]: 4489/8403 cut-off events. [2024-06-28 00:15:10,150 INFO L125 PetriNetUnfolderBase]: For 1887728/1887728 co-relation queries the response was YES. [2024-06-28 00:15:10,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80187 conditions, 8403 events. 4489/8403 cut-off events. For 1887728/1887728 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 72849 event pairs, 1267 based on Foata normal form. 6/8286 useless extension candidates. Maximal degree in co-relation 79967. Up to 6582 conditions per place. [2024-06-28 00:15:10,323 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 511 selfloop transitions, 69 changer transitions 0/588 dead transitions. [2024-06-28 00:15:10,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 588 transitions, 11623 flow [2024-06-28 00:15:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:15:10,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:15:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 201 transitions. [2024-06-28 00:15:10,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-28 00:15:10,325 INFO L175 Difference]: Start difference. First operand has 513 places, 556 transitions, 9977 flow. Second operand 9 states and 201 transitions. [2024-06-28 00:15:10,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 588 transitions, 11623 flow [2024-06-28 00:15:17,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 588 transitions, 11503 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 00:15:17,757 INFO L231 Difference]: Finished difference. Result has 512 places, 558 transitions, 10071 flow [2024-06-28 00:15:17,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9859, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10071, PETRI_PLACES=512, PETRI_TRANSITIONS=558} [2024-06-28 00:15:17,758 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 471 predicate places. [2024-06-28 00:15:17,758 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 558 transitions, 10071 flow [2024-06-28 00:15:17,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:15:17,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:17,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:17,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 00:15:17,759 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:17,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:17,759 INFO L85 PathProgramCache]: Analyzing trace with hash -344640861, now seen corresponding path program 2 times [2024-06-28 00:15:17,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:17,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046714319] [2024-06-28 00:15:17,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:17,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:18,599 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 00:15:18,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:18,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046714319] [2024-06-28 00:15:18,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046714319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:18,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:18,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:15:18,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653047791] [2024-06-28 00:15:18,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:18,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:15:18,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:18,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:15:18,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:15:18,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:15:18,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 558 transitions, 10071 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 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 00:15:18,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:18,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:15:18,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:21,579 INFO L124 PetriNetUnfolderBase]: 4496/8417 cut-off events. [2024-06-28 00:15:21,580 INFO L125 PetriNetUnfolderBase]: For 1892693/1892693 co-relation queries the response was YES. [2024-06-28 00:15:21,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79825 conditions, 8417 events. 4496/8417 cut-off events. For 1892693/1892693 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 73115 event pairs, 1374 based on Foata normal form. 12/8309 useless extension candidates. Maximal degree in co-relation 79604. Up to 6932 conditions per place. [2024-06-28 00:15:21,730 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 540 selfloop transitions, 40 changer transitions 0/587 dead transitions. [2024-06-28 00:15:21,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 587 transitions, 11494 flow [2024-06-28 00:15:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:15:21,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:15:21,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 00:15:21,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027777777777778 [2024-06-28 00:15:21,731 INFO L175 Difference]: Start difference. First operand has 512 places, 558 transitions, 10071 flow. Second operand 9 states and 181 transitions. [2024-06-28 00:15:21,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 587 transitions, 11494 flow [2024-06-28 00:15:29,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 587 transitions, 11304 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 00:15:29,891 INFO L231 Difference]: Finished difference. Result has 514 places, 563 transitions, 10169 flow [2024-06-28 00:15:29,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9881, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10169, PETRI_PLACES=514, PETRI_TRANSITIONS=563} [2024-06-28 00:15:29,892 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 473 predicate places. [2024-06-28 00:15:29,892 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 563 transitions, 10169 flow [2024-06-28 00:15:29,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 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 00:15:29,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:29,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:29,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 00:15:29,893 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:29,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:29,893 INFO L85 PathProgramCache]: Analyzing trace with hash -654661724, now seen corresponding path program 1 times [2024-06-28 00:15:29,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:29,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315146789] [2024-06-28 00:15:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:29,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:30,762 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 00:15:30,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:30,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315146789] [2024-06-28 00:15:30,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315146789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:30,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:30,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:15:30,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197082211] [2024-06-28 00:15:30,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:30,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:15:30,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:30,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:15:30,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:15:30,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:15:30,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 563 transitions, 10169 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 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 00:15:30,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:30,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:15:30,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:33,711 INFO L124 PetriNetUnfolderBase]: 4395/8218 cut-off events. [2024-06-28 00:15:33,712 INFO L125 PetriNetUnfolderBase]: For 1720146/1720146 co-relation queries the response was YES. [2024-06-28 00:15:33,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74807 conditions, 8218 events. 4395/8218 cut-off events. For 1720146/1720146 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 71003 event pairs, 1311 based on Foata normal form. 18/8127 useless extension candidates. Maximal degree in co-relation 74584. Up to 6759 conditions per place. [2024-06-28 00:15:33,858 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 542 selfloop transitions, 37 changer transitions 5/591 dead transitions. [2024-06-28 00:15:33,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 591 transitions, 11459 flow [2024-06-28 00:15:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:15:33,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:15:33,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-06-28 00:15:33,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4975 [2024-06-28 00:15:33,859 INFO L175 Difference]: Start difference. First operand has 514 places, 563 transitions, 10169 flow. Second operand 10 states and 199 transitions. [2024-06-28 00:15:33,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 591 transitions, 11459 flow [2024-06-28 00:15:40,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 591 transitions, 11224 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-28 00:15:40,566 INFO L231 Difference]: Finished difference. Result has 517 places, 561 transitions, 9919 flow [2024-06-28 00:15:40,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9934, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9919, PETRI_PLACES=517, PETRI_TRANSITIONS=561} [2024-06-28 00:15:40,567 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 476 predicate places. [2024-06-28 00:15:40,567 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 561 transitions, 9919 flow [2024-06-28 00:15:40,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 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 00:15:40,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:40,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:40,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 00:15:40,567 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:40,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:40,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1961930554, now seen corresponding path program 7 times [2024-06-28 00:15:40,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:40,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076704117] [2024-06-28 00:15:40,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:40,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:41,623 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 00:15:41,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:41,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076704117] [2024-06-28 00:15:41,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076704117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:41,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:41,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:41,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048520201] [2024-06-28 00:15:41,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:41,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:41,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:41,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:41,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:41,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-28 00:15:41,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 561 transitions, 9919 flow. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:41,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:41,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-28 00:15:41,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:44,511 INFO L124 PetriNetUnfolderBase]: 4351/8157 cut-off events. [2024-06-28 00:15:44,512 INFO L125 PetriNetUnfolderBase]: For 1669003/1669003 co-relation queries the response was YES. [2024-06-28 00:15:44,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74653 conditions, 8157 events. 4351/8157 cut-off events. For 1669003/1669003 co-relation queries the response was YES. Maximal size of possible extension queue 775. Compared 70382 event pairs, 1250 based on Foata normal form. 4/8044 useless extension candidates. Maximal degree in co-relation 74429. Up to 6563 conditions per place. [2024-06-28 00:15:44,661 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 524 selfloop transitions, 54 changer transitions 0/585 dead transitions. [2024-06-28 00:15:44,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 585 transitions, 11621 flow [2024-06-28 00:15:44,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:15:44,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:15:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 00:15:44,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509375 [2024-06-28 00:15:44,662 INFO L175 Difference]: Start difference. First operand has 517 places, 561 transitions, 9919 flow. Second operand 8 states and 163 transitions. [2024-06-28 00:15:44,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 585 transitions, 11621 flow [2024-06-28 00:15:50,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 585 transitions, 11517 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 00:15:50,579 INFO L231 Difference]: Finished difference. Result has 518 places, 566 transitions, 10142 flow [2024-06-28 00:15:50,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9815, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10142, PETRI_PLACES=518, PETRI_TRANSITIONS=566} [2024-06-28 00:15:50,580 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 477 predicate places. [2024-06-28 00:15:50,580 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 566 transitions, 10142 flow [2024-06-28 00:15:50,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:15:50,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:15:50,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:15:50,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 00:15:50,580 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:15:50,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:15:50,581 INFO L85 PathProgramCache]: Analyzing trace with hash 89926025, now seen corresponding path program 3 times [2024-06-28 00:15:50,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:15:50,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795813115] [2024-06-28 00:15:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:15:50,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:15:50,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:15:51,413 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 00:15:51,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:15:51,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795813115] [2024-06-28 00:15:51,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795813115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:15:51,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:15:51,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:15:51,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777469585] [2024-06-28 00:15:51,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:15:51,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:15:51,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:15:51,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:15:51,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:15:51,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:15:51,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 566 transitions, 10142 flow. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 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 00:15:51,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:15:51,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:15:51,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:15:54,433 INFO L124 PetriNetUnfolderBase]: 4459/8379 cut-off events. [2024-06-28 00:15:54,434 INFO L125 PetriNetUnfolderBase]: For 1814768/1814774 co-relation queries the response was YES. [2024-06-28 00:15:54,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76535 conditions, 8379 events. 4459/8379 cut-off events. For 1814768/1814774 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 73164 event pairs, 1344 based on Foata normal form. 22/8278 useless extension candidates. Maximal degree in co-relation 76309. Up to 6866 conditions per place. [2024-06-28 00:15:54,588 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 546 selfloop transitions, 36 changer transitions 9/598 dead transitions. [2024-06-28 00:15:54,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 598 transitions, 11697 flow [2024-06-28 00:15:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:15:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:15:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 00:15:54,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675 [2024-06-28 00:15:54,589 INFO L175 Difference]: Start difference. First operand has 518 places, 566 transitions, 10142 flow. Second operand 10 states and 187 transitions. [2024-06-28 00:15:54,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 598 transitions, 11697 flow [2024-06-28 00:16:02,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 598 transitions, 11552 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 00:16:02,234 INFO L231 Difference]: Finished difference. Result has 527 places, 572 transitions, 10302 flow [2024-06-28 00:16:02,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10007, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10302, PETRI_PLACES=527, PETRI_TRANSITIONS=572} [2024-06-28 00:16:02,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 486 predicate places. [2024-06-28 00:16:02,234 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 572 transitions, 10302 flow [2024-06-28 00:16:02,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 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 00:16:02,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:02,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:02,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 00:16:02,235 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:02,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:02,235 INFO L85 PathProgramCache]: Analyzing trace with hash -87944338, now seen corresponding path program 8 times [2024-06-28 00:16:02,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:02,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006000930] [2024-06-28 00:16:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:02,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:02,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:03,164 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 00:16:03,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:03,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006000930] [2024-06-28 00:16:03,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006000930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:03,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:03,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:16:03,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022497711] [2024-06-28 00:16:03,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:03,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:16:03,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:03,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:16:03,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:16:03,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-28 00:16:03,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 572 transitions, 10302 flow. Second operand has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 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 00:16:03,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:03,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-28 00:16:03,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:16:06,353 INFO L124 PetriNetUnfolderBase]: 4395/8248 cut-off events. [2024-06-28 00:16:06,353 INFO L125 PetriNetUnfolderBase]: For 1705108/1705108 co-relation queries the response was YES. [2024-06-28 00:16:06,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75734 conditions, 8248 events. 4395/8248 cut-off events. For 1705108/1705108 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 71550 event pairs, 1310 based on Foata normal form. 4/8130 useless extension candidates. Maximal degree in co-relation 75503. Up to 6845 conditions per place. [2024-06-28 00:16:06,528 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 562 selfloop transitions, 31 changer transitions 0/600 dead transitions. [2024-06-28 00:16:06,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 600 transitions, 11661 flow [2024-06-28 00:16:06,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:16:06,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:16:06,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 00:16:06,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.465 [2024-06-28 00:16:06,529 INFO L175 Difference]: Start difference. First operand has 527 places, 572 transitions, 10302 flow. Second operand 10 states and 186 transitions. [2024-06-28 00:16:06,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 600 transitions, 11661 flow [2024-06-28 00:16:12,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 600 transitions, 11441 flow, removed 84 selfloop flow, removed 6 redundant places. [2024-06-28 00:16:12,877 INFO L231 Difference]: Finished difference. Result has 530 places, 575 transitions, 10237 flow [2024-06-28 00:16:12,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10082, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10237, PETRI_PLACES=530, PETRI_TRANSITIONS=575} [2024-06-28 00:16:12,878 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 489 predicate places. [2024-06-28 00:16:12,878 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 575 transitions, 10237 flow [2024-06-28 00:16:12,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.7) internal successors, (137), 10 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 00:16:12,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:16:12,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:16:12,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 00:16:12,878 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 00:16:12,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:16:12,879 INFO L85 PathProgramCache]: Analyzing trace with hash 846457894, now seen corresponding path program 13 times [2024-06-28 00:16:12,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:16:12,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110209138] [2024-06-28 00:16:12,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:16:12,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:16:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:16:13,827 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 00:16:13,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:16:13,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110209138] [2024-06-28 00:16:13,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110209138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:16:13,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:16:13,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:16:13,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076300536] [2024-06-28 00:16:13,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:16:13,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:16:13,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:16:13,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:16:13,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:16:13,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 40 [2024-06-28 00:16:13,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 575 transitions, 10237 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 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 00:16:13,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:16:13,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 40 [2024-06-28 00:16:13,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand