./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe012_power.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/safe012_power.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe012_power.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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 22:45:54,149 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 22:45:54,230 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 22:45:54,234 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 22:45:54,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 22:45:54,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 22:45:54,271 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 22:45:54,271 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 22:45:54,272 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 22:45:54,276 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 22:45:54,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 22:45:54,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 22:45:54,277 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 22:45:54,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 22:45:54,279 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 22:45:54,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 22:45:54,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 22:45:54,284 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 22:45:54,284 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 22:45:54,284 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 22:45:54,285 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 22:45:54,285 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 22:45:54,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 22:45:54,286 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 22:45:54,286 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 22:45:54,286 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 22:45:54,286 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 22:45:54,287 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 22:45:54,287 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 22:45:54,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 22:45:54,289 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 22:45:54,289 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 22:45:54,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:45:54,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 22:45:54,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 22:45:54,290 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 22:45:54,290 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 22:45:54,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 22:45:54,290 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 22:45:54,291 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 22:45:54,291 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 22:45:54,291 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 22:45:54,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 22:45:54,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 22:45:54,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 22:45:54,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 22:45:54,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 22:45:54,589 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 22:45:54,590 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 22:45:54,591 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe012_power.opt.yml/witness.yml [2024-06-27 22:45:54,721 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 22:45:54,722 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 22:45:54,725 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i [2024-06-27 22:45:55,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 22:45:56,132 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 22:45:56,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i [2024-06-27 22:45:56,160 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07ce6e67/cf9158d2cef449a3a07221e74b1fe3d1/FLAG7fa2bb64b [2024-06-27 22:45:56,179 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e07ce6e67/cf9158d2cef449a3a07221e74b1fe3d1 [2024-06-27 22:45:56,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 22:45:56,181 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 22:45:56,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 22:45:56,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 22:45:56,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 22:45:56,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:45:54" (1/2) ... [2024-06-27 22:45:56,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f9277d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:56, skipping insertion in model container [2024-06-27 22:45:56,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:45:54" (1/2) ... [2024-06-27 22:45:56,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4627bd1a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 10:45:56, skipping insertion in model container [2024-06-27 22:45:56,193 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:45:56" (2/2) ... [2024-06-27 22:45:56,194 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f9277d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56, skipping insertion in model container [2024-06-27 22:45:56,195 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 10:45:56" (2/2) ... [2024-06-27 22:45:56,195 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 22:45:56,225 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 22:45:56,226 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ! multithreaded || (((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 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 )__unbuffered_p2_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 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) [2024-06-27 22:45:56,227 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] ! multithreaded || (((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 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 )__unbuffered_p2_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 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) [2024-06-27 22:45:56,227 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] ! multithreaded || (((((((((((((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL) && (0LL - (long long )y) + (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$mem_tmp) + (long long )y$r_buff0_thd2 >= 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 )__unbuffered_p2_EAX$read_delayed - (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p2_EAX$read_delayed - (long long )weak$$choice2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$w_buff1_used >= 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) [2024-06-27 22:45:56,227 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 22:45:56,228 INFO L106 edCorrectnessWitness]: ghost_update [L851-L851] multithreaded = 1; [2024-06-27 22:45:56,277 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 22:45:56,466 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i[951,964] [2024-06-27 22:45:56,681 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:45:56,696 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 22:45:56,739 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe012_power.opt.i[951,964] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 22:45:56,836 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 22:45:56,881 INFO L206 MainTranslator]: Completed translation [2024-06-27 22:45:56,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56 WrapperNode [2024-06-27 22:45:56,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 22:45:56,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 22:45:56,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 22:45:56,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 22:45:56,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:56,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:56,959 INFO L138 Inliner]: procedures = 175, calls = 65, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 197 [2024-06-27 22:45:56,959 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 22:45:56,960 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 22:45:56,960 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 22:45:56,960 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 22:45:56,969 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:56,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:56,982 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:57,007 INFO L175 MemorySlicer]: Split 24 memory accesses to 2 slices as follows [2, 22]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-27 22:45:57,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:57,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:57,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:57,035 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:57,037 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:57,040 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:57,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 22:45:57,062 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 22:45:57,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 22:45:57,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 22:45:57,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (1/1) ... [2024-06-27 22:45:57,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 22:45:57,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 22:45:57,104 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 22:45:57,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 22:45:57,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 22:45:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 22:45:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 22:45:57,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 22:45:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 22:45:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 22:45:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 22:45:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 22:45:57,146 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 22:45:57,146 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 22:45:57,147 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 22:45:57,147 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 22:45:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 22:45:57,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 22:45:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 22:45:57,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 22:45:57,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 22:45:57,152 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 22:45:57,316 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 22:45:57,318 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 22:45:57,855 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 22:45:57,855 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 22:45:58,135 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 22:45:58,136 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 22:45:58,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:45:58 BoogieIcfgContainer [2024-06-27 22:45:58,136 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 22:45:58,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 22:45:58,139 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 22:45:58,142 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 22:45:58,143 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 10:45:54" (1/4) ... [2024-06-27 22:45:58,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743c03aa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 10:45:58, skipping insertion in model container [2024-06-27 22:45:58,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 10:45:56" (2/4) ... [2024-06-27 22:45:58,144 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743c03aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:45:58, skipping insertion in model container [2024-06-27 22:45:58,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 10:45:56" (3/4) ... [2024-06-27 22:45:58,146 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743c03aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 10:45:58, skipping insertion in model container [2024-06-27 22:45:58,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 10:45:58" (4/4) ... [2024-06-27 22:45:58,147 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_power.opt.i [2024-06-27 22:45:58,165 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 22:45:58,165 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 22:45:58,166 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 22:45:58,235 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 22:45:58,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:45:58,308 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-06-27 22:45:58,308 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:45:58,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-06-27 22:45:58,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-06-27 22:45:58,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-06-27 22:45:58,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 22:45:58,345 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;@6989352c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 22:45:58,345 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 22:45:58,349 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 22:45:58,349 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 22:45:58,349 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 22:45:58,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:45:58,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 22:45:58,350 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:45:58,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:45:58,357 INFO L85 PathProgramCache]: Analyzing trace with hash 688050875, now seen corresponding path program 1 times [2024-06-27 22:45:58,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:45:58,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548881779] [2024-06-27 22:45:58,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:45:58,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:45:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:45:59,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:45:59,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:45:59,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548881779] [2024-06-27 22:45:59,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548881779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:45:59,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:45:59,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:45:59,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906122737] [2024-06-27 22:45:59,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:45:59,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:45:59,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:45:59,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:45:59,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:45:59,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-06-27 22:45:59,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 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) [2024-06-27 22:45:59,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:45:59,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-06-27 22:45:59,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:00,142 INFO L124 PetriNetUnfolderBase]: 1297/2126 cut-off events. [2024-06-27 22:46:00,142 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-06-27 22:46:00,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4123 conditions, 2126 events. 1297/2126 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 14164 event pairs, 398 based on Foata normal form. 60/1999 useless extension candidates. Maximal degree in co-relation 4111. Up to 1912 conditions per place. [2024-06-27 22:46:00,165 INFO L140 encePairwiseOnDemand]: 41/48 looper letters, 42 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2024-06-27 22:46:00,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 218 flow [2024-06-27 22:46:00,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:46:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:46:00,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 22:46:00,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6805555555555556 [2024-06-27 22:46:00,179 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 98 transitions. [2024-06-27 22:46:00,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 218 flow [2024-06-27 22:46:00,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 214 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:00,188 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 113 flow [2024-06-27 22:46:00,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 22:46:00,194 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-27 22:46:00,194 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 113 flow [2024-06-27 22:46:00,194 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) [2024-06-27 22:46:00,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:00,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:00,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 22:46:00,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:00,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:00,196 INFO L85 PathProgramCache]: Analyzing trace with hash -387621582, now seen corresponding path program 1 times [2024-06-27 22:46:00,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:00,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016374178] [2024-06-27 22:46:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:00,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:00,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:00,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016374178] [2024-06-27 22:46:00,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016374178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:00,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:00,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 22:46:00,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601755389] [2024-06-27 22:46:00,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:00,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 22:46:00,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:00,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 22:46:00,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 22:46:00,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 48 [2024-06-27 22:46:00,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:00,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:00,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 48 [2024-06-27 22:46:00,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:00,676 INFO L124 PetriNetUnfolderBase]: 753/1334 cut-off events. [2024-06-27 22:46:00,676 INFO L125 PetriNetUnfolderBase]: For 128/130 co-relation queries the response was YES. [2024-06-27 22:46:00,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2709 conditions, 1334 events. 753/1334 cut-off events. For 128/130 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9478 event pairs, 184 based on Foata normal form. 0/1301 useless extension candidates. Maximal degree in co-relation 2697. Up to 832 conditions per place. [2024-06-27 22:46:00,684 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 43 selfloop transitions, 2 changer transitions 1/62 dead transitions. [2024-06-27 22:46:00,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 247 flow [2024-06-27 22:46:00,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 22:46:00,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 22:46:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-06-27 22:46:00,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2024-06-27 22:46:00,687 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 113 flow. Second operand 3 states and 100 transitions. [2024-06-27 22:46:00,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 247 flow [2024-06-27 22:46:00,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:00,689 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 112 flow [2024-06-27 22:46:00,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2024-06-27 22:46:00,690 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -1 predicate places. [2024-06-27 22:46:00,690 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 112 flow [2024-06-27 22:46:00,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:00,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:00,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:00,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 22:46:00,691 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:00,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:00,692 INFO L85 PathProgramCache]: Analyzing trace with hash 868633086, now seen corresponding path program 1 times [2024-06-27 22:46:00,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:00,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098105874] [2024-06-27 22:46:00,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:00,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:01,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:01,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098105874] [2024-06-27 22:46:01,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098105874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:01,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:01,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 22:46:01,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346902798] [2024-06-27 22:46:01,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:01,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 22:46:01,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:01,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 22:46:01,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 22:46:01,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:46:01,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:01,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:01,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:46:01,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:02,073 INFO L124 PetriNetUnfolderBase]: 1725/2819 cut-off events. [2024-06-27 22:46:02,073 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-06-27 22:46:02,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5968 conditions, 2819 events. 1725/2819 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17575 event pairs, 619 based on Foata normal form. 3/2806 useless extension candidates. Maximal degree in co-relation 5954. Up to 2468 conditions per place. [2024-06-27 22:46:02,092 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 58 selfloop transitions, 11 changer transitions 3/83 dead transitions. [2024-06-27 22:46:02,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 83 transitions, 352 flow [2024-06-27 22:46:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 22:46:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 22:46:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-06-27 22:46:02,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-06-27 22:46:02,100 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 112 flow. Second operand 5 states and 141 transitions. [2024-06-27 22:46:02,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 83 transitions, 352 flow [2024-06-27 22:46:02,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 83 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:02,107 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 181 flow [2024-06-27 22:46:02,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-06-27 22:46:02,108 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2024-06-27 22:46:02,109 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 181 flow [2024-06-27 22:46:02,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:02,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:02,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:02,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 22:46:02,111 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:02,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:02,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1157448828, now seen corresponding path program 1 times [2024-06-27 22:46:02,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:02,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425489407] [2024-06-27 22:46:02,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:02,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:02,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:02,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425489407] [2024-06-27 22:46:02,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425489407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:02,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:02,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:46:02,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34803893] [2024-06-27 22:46:02,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:02,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:46:02,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:02,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:46:02,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:46:02,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:46:02,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:02,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:02,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:46:02,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:03,595 INFO L124 PetriNetUnfolderBase]: 1550/2678 cut-off events. [2024-06-27 22:46:03,596 INFO L125 PetriNetUnfolderBase]: For 1081/1084 co-relation queries the response was YES. [2024-06-27 22:46:03,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6248 conditions, 2678 events. 1550/2678 cut-off events. For 1081/1084 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17070 event pairs, 757 based on Foata normal form. 4/2604 useless extension candidates. Maximal degree in co-relation 6229. Up to 2256 conditions per place. [2024-06-27 22:46:03,614 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 64 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-06-27 22:46:03,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 91 transitions, 450 flow [2024-06-27 22:46:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:03,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:03,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-27 22:46:03,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451388888888888 [2024-06-27 22:46:03,617 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 181 flow. Second operand 6 states and 157 transitions. [2024-06-27 22:46:03,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 91 transitions, 450 flow [2024-06-27 22:46:03,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 450 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 22:46:03,623 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 299 flow [2024-06-27 22:46:03,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2024-06-27 22:46:03,624 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-06-27 22:46:03,624 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 299 flow [2024-06-27 22:46:03,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:03,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:03,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:03,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 22:46:03,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:03,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:03,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1521177059, now seen corresponding path program 1 times [2024-06-27 22:46:03,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:03,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568298016] [2024-06-27 22:46:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:03,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:04,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:04,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:04,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568298016] [2024-06-27 22:46:04,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568298016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:04,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:04,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:04,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254205326] [2024-06-27 22:46:04,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:04,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:04,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:04,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:04,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:04,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:46:04,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 299 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) [2024-06-27 22:46:04,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:04,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:46:04,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:05,770 INFO L124 PetriNetUnfolderBase]: 1614/2786 cut-off events. [2024-06-27 22:46:05,771 INFO L125 PetriNetUnfolderBase]: For 2209/2215 co-relation queries the response was YES. [2024-06-27 22:46:05,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7325 conditions, 2786 events. 1614/2786 cut-off events. For 2209/2215 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 17910 event pairs, 713 based on Foata normal form. 10/2713 useless extension candidates. Maximal degree in co-relation 7299. Up to 2238 conditions per place. [2024-06-27 22:46:05,791 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 80 selfloop transitions, 29 changer transitions 0/120 dead transitions. [2024-06-27 22:46:05,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 120 transitions, 704 flow [2024-06-27 22:46:05,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:46:05,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:46:05,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 22:46:05,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-06-27 22:46:05,798 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 299 flow. Second operand 8 states and 205 transitions. [2024-06-27 22:46:05,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 120 transitions, 704 flow [2024-06-27 22:46:05,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 120 transitions, 697 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:05,807 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 495 flow [2024-06-27 22:46:05,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=495, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-27 22:46:05,808 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 21 predicate places. [2024-06-27 22:46:05,808 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 495 flow [2024-06-27 22:46:05,808 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) [2024-06-27 22:46:05,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:05,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:05,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 22:46:05,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:05,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:05,809 INFO L85 PathProgramCache]: Analyzing trace with hash 77629466, now seen corresponding path program 1 times [2024-06-27 22:46:05,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620501150] [2024-06-27 22:46:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:05,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:05,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:06,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:06,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620501150] [2024-06-27 22:46:06,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620501150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:06,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:06,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:06,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113191496] [2024-06-27 22:46:06,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:06,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:06,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:06,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:06,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:06,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:06,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 495 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:06,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:06,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:06,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:07,857 INFO L124 PetriNetUnfolderBase]: 2514/4124 cut-off events. [2024-06-27 22:46:07,858 INFO L125 PetriNetUnfolderBase]: For 5842/5846 co-relation queries the response was YES. [2024-06-27 22:46:07,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12582 conditions, 4124 events. 2514/4124 cut-off events. For 5842/5846 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 25745 event pairs, 526 based on Foata normal form. 9/4058 useless extension candidates. Maximal degree in co-relation 12550. Up to 3232 conditions per place. [2024-06-27 22:46:07,897 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 119 selfloop transitions, 28 changer transitions 0/157 dead transitions. [2024-06-27 22:46:07,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 157 transitions, 1114 flow [2024-06-27 22:46:07,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:46:07,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:46:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-06-27 22:46:07,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-06-27 22:46:07,900 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 495 flow. Second operand 8 states and 209 transitions. [2024-06-27 22:46:07,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 157 transitions, 1114 flow [2024-06-27 22:46:07,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 157 transitions, 1093 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:07,915 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 717 flow [2024-06-27 22:46:07,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=717, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2024-06-27 22:46:07,918 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2024-06-27 22:46:07,918 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 717 flow [2024-06-27 22:46:07,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:07,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:07,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:07,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 22:46:07,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:07,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:07,920 INFO L85 PathProgramCache]: Analyzing trace with hash 687228768, now seen corresponding path program 2 times [2024-06-27 22:46:07,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:07,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517506344] [2024-06-27 22:46:07,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:07,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:08,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:08,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517506344] [2024-06-27 22:46:08,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517506344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:08,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:08,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:08,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604603603] [2024-06-27 22:46:08,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:08,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:08,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:08,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:08,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:08,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:08,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 717 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:08,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:08,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:08,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:09,766 INFO L124 PetriNetUnfolderBase]: 2698/4574 cut-off events. [2024-06-27 22:46:09,767 INFO L125 PetriNetUnfolderBase]: For 9595/9609 co-relation queries the response was YES. [2024-06-27 22:46:09,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15069 conditions, 4574 events. 2698/4574 cut-off events. For 9595/9609 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 29860 event pairs, 513 based on Foata normal form. 20/4458 useless extension candidates. Maximal degree in co-relation 15032. Up to 3310 conditions per place. [2024-06-27 22:46:09,805 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 100 selfloop transitions, 35 changer transitions 0/145 dead transitions. [2024-06-27 22:46:09,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 145 transitions, 1158 flow [2024-06-27 22:46:09,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:09,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 22:46:09,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-06-27 22:46:09,807 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 717 flow. Second operand 7 states and 178 transitions. [2024-06-27 22:46:09,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 145 transitions, 1158 flow [2024-06-27 22:46:09,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 145 transitions, 1141 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:09,826 INFO L231 Difference]: Finished difference. Result has 90 places, 102 transitions, 841 flow [2024-06-27 22:46:09,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=700, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=841, PETRI_PLACES=90, PETRI_TRANSITIONS=102} [2024-06-27 22:46:09,827 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-06-27 22:46:09,827 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 102 transitions, 841 flow [2024-06-27 22:46:09,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:09,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:09,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:09,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 22:46:09,828 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:09,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:09,829 INFO L85 PathProgramCache]: Analyzing trace with hash 690577698, now seen corresponding path program 3 times [2024-06-27 22:46:09,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:09,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153911844] [2024-06-27 22:46:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:09,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:10,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:10,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153911844] [2024-06-27 22:46:10,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153911844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:10,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:10,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:10,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94949561] [2024-06-27 22:46:10,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:10,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:10,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:10,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:10,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:10,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:10,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 102 transitions, 841 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:10,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:10,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:10,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:11,520 INFO L124 PetriNetUnfolderBase]: 2789/4583 cut-off events. [2024-06-27 22:46:11,520 INFO L125 PetriNetUnfolderBase]: For 13694/13704 co-relation queries the response was YES. [2024-06-27 22:46:11,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16390 conditions, 4583 events. 2789/4583 cut-off events. For 13694/13704 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 29479 event pairs, 498 based on Foata normal form. 9/4496 useless extension candidates. Maximal degree in co-relation 16350. Up to 3088 conditions per place. [2024-06-27 22:46:11,551 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 99 selfloop transitions, 41 changer transitions 0/150 dead transitions. [2024-06-27 22:46:11,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 150 transitions, 1323 flow [2024-06-27 22:46:11,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:11,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:11,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-27 22:46:11,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-06-27 22:46:11,553 INFO L175 Difference]: Start difference. First operand has 90 places, 102 transitions, 841 flow. Second operand 6 states and 166 transitions. [2024-06-27 22:46:11,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 150 transitions, 1323 flow [2024-06-27 22:46:11,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 150 transitions, 1258 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 22:46:11,582 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 919 flow [2024-06-27 22:46:11,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=919, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2024-06-27 22:46:11,583 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 38 predicate places. [2024-06-27 22:46:11,583 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 919 flow [2024-06-27 22:46:11,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:11,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:11,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:11,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 22:46:11,584 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:11,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash 7299902, now seen corresponding path program 4 times [2024-06-27 22:46:11,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:11,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678821471] [2024-06-27 22:46:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:11,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:12,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:12,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:12,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678821471] [2024-06-27 22:46:12,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678821471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:12,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:12,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:46:12,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585148089] [2024-06-27 22:46:12,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:12,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:46:12,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:12,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:46:12,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:46:12,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:12,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 919 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:12,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:12,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:12,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:12,994 INFO L124 PetriNetUnfolderBase]: 2743/4506 cut-off events. [2024-06-27 22:46:12,994 INFO L125 PetriNetUnfolderBase]: For 14442/14452 co-relation queries the response was YES. [2024-06-27 22:46:13,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16037 conditions, 4506 events. 2743/4506 cut-off events. For 14442/14452 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 28904 event pairs, 499 based on Foata normal form. 14/4422 useless extension candidates. Maximal degree in co-relation 15996. Up to 3147 conditions per place. [2024-06-27 22:46:13,026 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 85 selfloop transitions, 39 changer transitions 0/134 dead transitions. [2024-06-27 22:46:13,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 134 transitions, 1245 flow [2024-06-27 22:46:13,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:46:13,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:46:13,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-27 22:46:13,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-06-27 22:46:13,028 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 919 flow. Second operand 6 states and 149 transitions. [2024-06-27 22:46:13,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 134 transitions, 1245 flow [2024-06-27 22:46:13,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 134 transitions, 1215 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:13,053 INFO L231 Difference]: Finished difference. Result has 97 places, 106 transitions, 1024 flow [2024-06-27 22:46:13,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1024, PETRI_PLACES=97, PETRI_TRANSITIONS=106} [2024-06-27 22:46:13,054 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2024-06-27 22:46:13,054 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 106 transitions, 1024 flow [2024-06-27 22:46:13,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:13,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:13,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:13,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 22:46:13,055 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:13,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:13,055 INFO L85 PathProgramCache]: Analyzing trace with hash -181467704, now seen corresponding path program 1 times [2024-06-27 22:46:13,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:13,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198084643] [2024-06-27 22:46:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:13,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:13,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:13,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:13,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198084643] [2024-06-27 22:46:13,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198084643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:13,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:13,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:13,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125703882] [2024-06-27 22:46:13,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:13,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:13,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:13,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:13,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:13,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:13,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 106 transitions, 1024 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:13,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:13,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:13,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:14,759 INFO L124 PetriNetUnfolderBase]: 2855/4824 cut-off events. [2024-06-27 22:46:14,760 INFO L125 PetriNetUnfolderBase]: For 17543/17559 co-relation queries the response was YES. [2024-06-27 22:46:14,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18017 conditions, 4824 events. 2855/4824 cut-off events. For 17543/17559 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 31620 event pairs, 475 based on Foata normal form. 20/4696 useless extension candidates. Maximal degree in co-relation 17972. Up to 3666 conditions per place. [2024-06-27 22:46:14,789 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 123 selfloop transitions, 37 changer transitions 0/170 dead transitions. [2024-06-27 22:46:14,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 170 transitions, 1695 flow [2024-06-27 22:46:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:46:14,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:46:14,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 22:46:14,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-27 22:46:14,792 INFO L175 Difference]: Start difference. First operand has 97 places, 106 transitions, 1024 flow. Second operand 8 states and 196 transitions. [2024-06-27 22:46:14,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 170 transitions, 1695 flow [2024-06-27 22:46:14,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 170 transitions, 1571 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 22:46:14,820 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 1298 flow [2024-06-27 22:46:14,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1298, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2024-06-27 22:46:14,821 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-06-27 22:46:14,821 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 1298 flow [2024-06-27 22:46:14,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:14,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:14,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:14,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 22:46:14,822 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:14,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash -399387164, now seen corresponding path program 2 times [2024-06-27 22:46:14,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:14,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140297131] [2024-06-27 22:46:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:14,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:15,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:15,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140297131] [2024-06-27 22:46:15,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140297131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:15,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:15,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:15,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741973909] [2024-06-27 22:46:15,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:15,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:15,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:15,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:15,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:15,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:15,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 1298 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:15,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:15,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:15,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:16,548 INFO L124 PetriNetUnfolderBase]: 2950/4943 cut-off events. [2024-06-27 22:46:16,548 INFO L125 PetriNetUnfolderBase]: For 19638/19654 co-relation queries the response was YES. [2024-06-27 22:46:16,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19366 conditions, 4943 events. 2950/4943 cut-off events. For 19638/19654 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 32489 event pairs, 507 based on Foata normal form. 12/4804 useless extension candidates. Maximal degree in co-relation 19318. Up to 3283 conditions per place. [2024-06-27 22:46:16,577 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 117 selfloop transitions, 62 changer transitions 0/189 dead transitions. [2024-06-27 22:46:16,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 189 transitions, 1988 flow [2024-06-27 22:46:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:16,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:16,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-06-27 22:46:16,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5565476190476191 [2024-06-27 22:46:16,580 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 1298 flow. Second operand 7 states and 187 transitions. [2024-06-27 22:46:16,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 189 transitions, 1988 flow [2024-06-27 22:46:16,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 189 transitions, 1937 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:16,628 INFO L231 Difference]: Finished difference. Result has 109 places, 144 transitions, 1640 flow [2024-06-27 22:46:16,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1247, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1640, PETRI_PLACES=109, PETRI_TRANSITIONS=144} [2024-06-27 22:46:16,629 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-06-27 22:46:16,629 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 144 transitions, 1640 flow [2024-06-27 22:46:16,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:16,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:16,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:16,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 22:46:16,630 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:16,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:16,631 INFO L85 PathProgramCache]: Analyzing trace with hash -66926114, now seen corresponding path program 3 times [2024-06-27 22:46:16,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:16,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478606117] [2024-06-27 22:46:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:16,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:17,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478606117] [2024-06-27 22:46:17,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478606117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:17,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:17,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:17,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709183565] [2024-06-27 22:46:17,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:17,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:17,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:17,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:17,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:17,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:17,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 144 transitions, 1640 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:17,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:17,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:17,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:18,290 INFO L124 PetriNetUnfolderBase]: 3012/5033 cut-off events. [2024-06-27 22:46:18,291 INFO L125 PetriNetUnfolderBase]: For 26639/26655 co-relation queries the response was YES. [2024-06-27 22:46:18,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21482 conditions, 5033 events. 3012/5033 cut-off events. For 26639/26655 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 32921 event pairs, 511 based on Foata normal form. 12/4894 useless extension candidates. Maximal degree in co-relation 21429. Up to 3647 conditions per place. [2024-06-27 22:46:18,337 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 133 selfloop transitions, 49 changer transitions 0/192 dead transitions. [2024-06-27 22:46:18,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 192 transitions, 2197 flow [2024-06-27 22:46:18,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:18,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 22:46:18,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 22:46:18,340 INFO L175 Difference]: Start difference. First operand has 109 places, 144 transitions, 1640 flow. Second operand 7 states and 183 transitions. [2024-06-27 22:46:18,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 192 transitions, 2197 flow [2024-06-27 22:46:18,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 192 transitions, 2115 flow, removed 29 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:18,407 INFO L231 Difference]: Finished difference. Result has 114 places, 149 transitions, 1736 flow [2024-06-27 22:46:18,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1736, PETRI_PLACES=114, PETRI_TRANSITIONS=149} [2024-06-27 22:46:18,408 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 60 predicate places. [2024-06-27 22:46:18,408 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 149 transitions, 1736 flow [2024-06-27 22:46:18,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:18,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:18,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:18,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 22:46:18,409 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:18,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:18,410 INFO L85 PathProgramCache]: Analyzing trace with hash 226298690, now seen corresponding path program 4 times [2024-06-27 22:46:18,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:18,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397456956] [2024-06-27 22:46:18,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:18,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:18,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:18,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397456956] [2024-06-27 22:46:18,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397456956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:18,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:18,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:46:18,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675945689] [2024-06-27 22:46:18,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:18,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:46:18,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:18,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:46:18,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:46:18,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:18,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 149 transitions, 1736 flow. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:18,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:18,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:18,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:19,915 INFO L124 PetriNetUnfolderBase]: 3004/5023 cut-off events. [2024-06-27 22:46:19,915 INFO L125 PetriNetUnfolderBase]: For 26038/26054 co-relation queries the response was YES. [2024-06-27 22:46:19,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21610 conditions, 5023 events. 3004/5023 cut-off events. For 26038/26054 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 32842 event pairs, 484 based on Foata normal form. 10/4872 useless extension candidates. Maximal degree in co-relation 21554. Up to 3890 conditions per place. [2024-06-27 22:46:19,949 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 149 selfloop transitions, 35 changer transitions 0/194 dead transitions. [2024-06-27 22:46:19,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 194 transitions, 2343 flow [2024-06-27 22:46:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:46:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:46:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 22:46:19,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-06-27 22:46:19,955 INFO L175 Difference]: Start difference. First operand has 114 places, 149 transitions, 1736 flow. Second operand 7 states and 169 transitions. [2024-06-27 22:46:19,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 194 transitions, 2343 flow [2024-06-27 22:46:20,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 194 transitions, 2214 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 22:46:20,015 INFO L231 Difference]: Finished difference. Result has 119 places, 162 transitions, 1908 flow [2024-06-27 22:46:20,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1908, PETRI_PLACES=119, PETRI_TRANSITIONS=162} [2024-06-27 22:46:20,016 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-06-27 22:46:20,016 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 162 transitions, 1908 flow [2024-06-27 22:46:20,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:20,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:20,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:20,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 22:46:20,017 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:20,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:20,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1857531385, now seen corresponding path program 1 times [2024-06-27 22:46:20,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:20,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110918042] [2024-06-27 22:46:20,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:20,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:21,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:21,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110918042] [2024-06-27 22:46:21,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110918042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:21,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:21,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:21,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216991981] [2024-06-27 22:46:21,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:21,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:21,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:21,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:21,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:21,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:21,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 162 transitions, 1908 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:21,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:21,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:21,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:22,300 INFO L124 PetriNetUnfolderBase]: 3093/5240 cut-off events. [2024-06-27 22:46:22,301 INFO L125 PetriNetUnfolderBase]: For 28564/28586 co-relation queries the response was YES. [2024-06-27 22:46:22,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22657 conditions, 5240 events. 3093/5240 cut-off events. For 28564/28586 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 34953 event pairs, 443 based on Foata normal form. 28/5107 useless extension candidates. Maximal degree in co-relation 22598. Up to 4008 conditions per place. [2024-06-27 22:46:22,344 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 188 selfloop transitions, 36 changer transitions 0/234 dead transitions. [2024-06-27 22:46:22,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 234 transitions, 2629 flow [2024-06-27 22:46:22,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:22,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-06-27 22:46:22,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254629629629629 [2024-06-27 22:46:22,348 INFO L175 Difference]: Start difference. First operand has 119 places, 162 transitions, 1908 flow. Second operand 9 states and 227 transitions. [2024-06-27 22:46:22,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 234 transitions, 2629 flow [2024-06-27 22:46:22,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 234 transitions, 2580 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:22,424 INFO L231 Difference]: Finished difference. Result has 128 places, 173 transitions, 2120 flow [2024-06-27 22:46:22,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2120, PETRI_PLACES=128, PETRI_TRANSITIONS=173} [2024-06-27 22:46:22,425 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 74 predicate places. [2024-06-27 22:46:22,425 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 173 transitions, 2120 flow [2024-06-27 22:46:22,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:22,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:22,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:22,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 22:46:22,426 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:22,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:22,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2074498525, now seen corresponding path program 2 times [2024-06-27 22:46:22,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:22,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924659516] [2024-06-27 22:46:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:22,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:23,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:23,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924659516] [2024-06-27 22:46:23,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924659516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:23,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:23,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:46:23,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301632698] [2024-06-27 22:46:23,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:23,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:46:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:46:23,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:46:23,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:23,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 173 transitions, 2120 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) [2024-06-27 22:46:23,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:23,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:23,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:25,462 INFO L124 PetriNetUnfolderBase]: 4203/7134 cut-off events. [2024-06-27 22:46:25,462 INFO L125 PetriNetUnfolderBase]: For 48333/48336 co-relation queries the response was YES. [2024-06-27 22:46:25,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32794 conditions, 7134 events. 4203/7134 cut-off events. For 48333/48336 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 50452 event pairs, 521 based on Foata normal form. 14/6987 useless extension candidates. Maximal degree in co-relation 32731. Up to 4185 conditions per place. [2024-06-27 22:46:25,507 INFO L140 encePairwiseOnDemand]: 33/48 looper letters, 209 selfloop transitions, 136 changer transitions 0/355 dead transitions. [2024-06-27 22:46:25,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 355 transitions, 4523 flow [2024-06-27 22:46:25,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:46:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:46:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 275 transitions. [2024-06-27 22:46:25,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-06-27 22:46:25,509 INFO L175 Difference]: Start difference. First operand has 128 places, 173 transitions, 2120 flow. Second operand 10 states and 275 transitions. [2024-06-27 22:46:25,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 355 transitions, 4523 flow [2024-06-27 22:46:25,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 355 transitions, 4423 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:25,667 INFO L231 Difference]: Finished difference. Result has 140 places, 263 transitions, 3759 flow [2024-06-27 22:46:25,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2051, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3759, PETRI_PLACES=140, PETRI_TRANSITIONS=263} [2024-06-27 22:46:25,667 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 86 predicate places. [2024-06-27 22:46:25,668 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 263 transitions, 3759 flow [2024-06-27 22:46:25,668 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) [2024-06-27 22:46:25,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:25,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:25,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 22:46:25,668 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:25,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash 13931671, now seen corresponding path program 3 times [2024-06-27 22:46:25,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:25,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629254318] [2024-06-27 22:46:25,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:25,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:26,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:26,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629254318] [2024-06-27 22:46:26,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629254318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:26,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:26,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:26,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401999972] [2024-06-27 22:46:26,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:26,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:26,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:26,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:26,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:26,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:26,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 263 transitions, 3759 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:26,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:26,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:26,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:28,548 INFO L124 PetriNetUnfolderBase]: 4679/7975 cut-off events. [2024-06-27 22:46:28,549 INFO L125 PetriNetUnfolderBase]: For 64683/64699 co-relation queries the response was YES. [2024-06-27 22:46:28,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40410 conditions, 7975 events. 4679/7975 cut-off events. For 64683/64699 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 57470 event pairs, 611 based on Foata normal form. 14/7790 useless extension candidates. Maximal degree in co-relation 40341. Up to 5661 conditions per place. [2024-06-27 22:46:28,599 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 303 selfloop transitions, 78 changer transitions 0/391 dead transitions. [2024-06-27 22:46:28,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 391 transitions, 5490 flow [2024-06-27 22:46:28,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:28,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:28,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-27 22:46:28,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-27 22:46:28,601 INFO L175 Difference]: Start difference. First operand has 140 places, 263 transitions, 3759 flow. Second operand 9 states and 246 transitions. [2024-06-27 22:46:28,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 391 transitions, 5490 flow [2024-06-27 22:46:28,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 391 transitions, 5444 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:28,803 INFO L231 Difference]: Finished difference. Result has 151 places, 298 transitions, 4474 flow [2024-06-27 22:46:28,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3719, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4474, PETRI_PLACES=151, PETRI_TRANSITIONS=298} [2024-06-27 22:46:28,804 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 97 predicate places. [2024-06-27 22:46:28,804 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 298 transitions, 4474 flow [2024-06-27 22:46:28,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:28,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:28,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:28,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 22:46:28,805 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:28,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash -68296133, now seen corresponding path program 4 times [2024-06-27 22:46:28,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:28,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492465591] [2024-06-27 22:46:28,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:28,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:29,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:29,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492465591] [2024-06-27 22:46:29,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492465591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:29,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:29,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:29,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782896634] [2024-06-27 22:46:29,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:29,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:29,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:29,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:29,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:29,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 298 transitions, 4474 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:29,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:29,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:29,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:31,941 INFO L124 PetriNetUnfolderBase]: 5439/9390 cut-off events. [2024-06-27 22:46:31,941 INFO L125 PetriNetUnfolderBase]: For 87635/87679 co-relation queries the response was YES. [2024-06-27 22:46:31,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48750 conditions, 9390 events. 5439/9390 cut-off events. For 87635/87679 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 70774 event pairs, 731 based on Foata normal form. 25/9196 useless extension candidates. Maximal degree in co-relation 48675. Up to 6169 conditions per place. [2024-06-27 22:46:32,004 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 327 selfloop transitions, 108 changer transitions 0/445 dead transitions. [2024-06-27 22:46:32,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 445 transitions, 6568 flow [2024-06-27 22:46:32,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:32,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:32,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 249 transitions. [2024-06-27 22:46:32,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5763888888888888 [2024-06-27 22:46:32,006 INFO L175 Difference]: Start difference. First operand has 151 places, 298 transitions, 4474 flow. Second operand 9 states and 249 transitions. [2024-06-27 22:46:32,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 445 transitions, 6568 flow [2024-06-27 22:46:32,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 445 transitions, 6431 flow, removed 53 selfloop flow, removed 2 redundant places. [2024-06-27 22:46:32,346 INFO L231 Difference]: Finished difference. Result has 161 places, 347 transitions, 5376 flow [2024-06-27 22:46:32,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4353, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5376, PETRI_PLACES=161, PETRI_TRANSITIONS=347} [2024-06-27 22:46:32,347 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 107 predicate places. [2024-06-27 22:46:32,347 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 347 transitions, 5376 flow [2024-06-27 22:46:32,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:32,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:32,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:32,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 22:46:32,348 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:32,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:32,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2144601827, now seen corresponding path program 5 times [2024-06-27 22:46:32,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:32,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214175799] [2024-06-27 22:46:32,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:32,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:33,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214175799] [2024-06-27 22:46:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214175799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:33,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:33,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270301016] [2024-06-27 22:46:33,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:33,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:33,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:33,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:33,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:33,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:33,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 347 transitions, 5376 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:33,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:33,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:33,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:35,454 INFO L124 PetriNetUnfolderBase]: 5576/9646 cut-off events. [2024-06-27 22:46:35,454 INFO L125 PetriNetUnfolderBase]: For 94492/94534 co-relation queries the response was YES. [2024-06-27 22:46:35,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51853 conditions, 9646 events. 5576/9646 cut-off events. For 94492/94534 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 73210 event pairs, 827 based on Foata normal form. 29/9429 useless extension candidates. Maximal degree in co-relation 51772. Up to 6957 conditions per place. [2024-06-27 22:46:35,526 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 329 selfloop transitions, 104 changer transitions 0/443 dead transitions. [2024-06-27 22:46:35,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 443 transitions, 6818 flow [2024-06-27 22:46:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:35,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:35,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 246 transitions. [2024-06-27 22:46:35,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2024-06-27 22:46:35,528 INFO L175 Difference]: Start difference. First operand has 161 places, 347 transitions, 5376 flow. Second operand 9 states and 246 transitions. [2024-06-27 22:46:35,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 443 transitions, 6818 flow [2024-06-27 22:46:35,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 443 transitions, 6728 flow, removed 43 selfloop flow, removed 1 redundant places. [2024-06-27 22:46:35,893 INFO L231 Difference]: Finished difference. Result has 170 places, 354 transitions, 5682 flow [2024-06-27 22:46:35,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5306, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5682, PETRI_PLACES=170, PETRI_TRANSITIONS=354} [2024-06-27 22:46:35,894 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-06-27 22:46:35,894 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 354 transitions, 5682 flow [2024-06-27 22:46:35,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:35,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:35,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:35,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 22:46:35,895 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:35,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash -723393863, now seen corresponding path program 6 times [2024-06-27 22:46:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:35,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22238181] [2024-06-27 22:46:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:35,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:36,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:36,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:36,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22238181] [2024-06-27 22:46:36,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22238181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:36,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:36,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:46:36,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909197007] [2024-06-27 22:46:36,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:36,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:46:36,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:36,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:46:36,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:46:36,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:36,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 354 transitions, 5682 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) [2024-06-27 22:46:36,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:36,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:36,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:39,279 INFO L124 PetriNetUnfolderBase]: 5886/10206 cut-off events. [2024-06-27 22:46:39,279 INFO L125 PetriNetUnfolderBase]: For 104303/104347 co-relation queries the response was YES. [2024-06-27 22:46:39,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55607 conditions, 10206 events. 5886/10206 cut-off events. For 104303/104347 co-relation queries the response was YES. Maximal size of possible extension queue 576. Compared 78518 event pairs, 976 based on Foata normal form. 39/9972 useless extension candidates. Maximal degree in co-relation 55522. Up to 6992 conditions per place. [2024-06-27 22:46:39,357 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 301 selfloop transitions, 151 changer transitions 0/462 dead transitions. [2024-06-27 22:46:39,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 462 transitions, 7492 flow [2024-06-27 22:46:39,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:46:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:46:39,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 22:46:39,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-06-27 22:46:39,359 INFO L175 Difference]: Start difference. First operand has 170 places, 354 transitions, 5682 flow. Second operand 10 states and 254 transitions. [2024-06-27 22:46:39,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 462 transitions, 7492 flow [2024-06-27 22:46:39,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 462 transitions, 7208 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 22:46:39,778 INFO L231 Difference]: Finished difference. Result has 177 places, 395 transitions, 6481 flow [2024-06-27 22:46:39,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5414, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6481, PETRI_PLACES=177, PETRI_TRANSITIONS=395} [2024-06-27 22:46:39,779 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 123 predicate places. [2024-06-27 22:46:39,779 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 395 transitions, 6481 flow [2024-06-27 22:46:39,779 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) [2024-06-27 22:46:39,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:39,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:39,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 22:46:39,779 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:39,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:39,780 INFO L85 PathProgramCache]: Analyzing trace with hash 13924231, now seen corresponding path program 7 times [2024-06-27 22:46:39,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:39,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094591627] [2024-06-27 22:46:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:39,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:40,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:40,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094591627] [2024-06-27 22:46:40,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094591627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:40,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:40,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:46:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568342758] [2024-06-27 22:46:40,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:40,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:46:40,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:40,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:46:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:46:40,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:40,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 395 transitions, 6481 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) [2024-06-27 22:46:40,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:40,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:40,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:43,547 INFO L124 PetriNetUnfolderBase]: 5975/10358 cut-off events. [2024-06-27 22:46:43,547 INFO L125 PetriNetUnfolderBase]: For 100825/100841 co-relation queries the response was YES. [2024-06-27 22:46:43,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56927 conditions, 10358 events. 5975/10358 cut-off events. For 100825/100841 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 79716 event pairs, 842 based on Foata normal form. 14/10096 useless extension candidates. Maximal degree in co-relation 56838. Up to 7788 conditions per place. [2024-06-27 22:46:43,626 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 382 selfloop transitions, 90 changer transitions 0/482 dead transitions. [2024-06-27 22:46:43,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 482 transitions, 7851 flow [2024-06-27 22:46:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:46:43,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:46:43,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-27 22:46:43,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 22:46:43,627 INFO L175 Difference]: Start difference. First operand has 177 places, 395 transitions, 6481 flow. Second operand 10 states and 256 transitions. [2024-06-27 22:46:43,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 482 transitions, 7851 flow [2024-06-27 22:46:44,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 482 transitions, 7644 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:44,119 INFO L231 Difference]: Finished difference. Result has 185 places, 400 transitions, 6567 flow [2024-06-27 22:46:44,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6286, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6567, PETRI_PLACES=185, PETRI_TRANSITIONS=400} [2024-06-27 22:46:44,120 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 131 predicate places. [2024-06-27 22:46:44,120 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 400 transitions, 6567 flow [2024-06-27 22:46:44,120 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) [2024-06-27 22:46:44,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:44,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:44,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 22:46:44,121 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:44,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:44,121 INFO L85 PathProgramCache]: Analyzing trace with hash 574862539, now seen corresponding path program 8 times [2024-06-27 22:46:44,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:44,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119112320] [2024-06-27 22:46:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:44,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:44,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:44,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119112320] [2024-06-27 22:46:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119112320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:44,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:44,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:44,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970278622] [2024-06-27 22:46:44,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:44,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:44,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:44,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:44,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:45,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:45,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 400 transitions, 6567 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:45,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:45,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:45,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:47,314 INFO L124 PetriNetUnfolderBase]: 5983/10396 cut-off events. [2024-06-27 22:46:47,314 INFO L125 PetriNetUnfolderBase]: For 106295/106313 co-relation queries the response was YES. [2024-06-27 22:46:47,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56826 conditions, 10396 events. 5983/10396 cut-off events. For 106295/106313 co-relation queries the response was YES. Maximal size of possible extension queue 583. Compared 80261 event pairs, 838 based on Foata normal form. 16/10130 useless extension candidates. Maximal degree in co-relation 56735. Up to 7877 conditions per place. [2024-06-27 22:46:47,401 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 392 selfloop transitions, 84 changer transitions 0/486 dead transitions. [2024-06-27 22:46:47,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 486 transitions, 7937 flow [2024-06-27 22:46:47,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:47,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:47,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-27 22:46:47,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578703703703703 [2024-06-27 22:46:47,402 INFO L175 Difference]: Start difference. First operand has 185 places, 400 transitions, 6567 flow. Second operand 9 states and 241 transitions. [2024-06-27 22:46:47,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 486 transitions, 7937 flow [2024-06-27 22:46:47,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 486 transitions, 7702 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 22:46:47,932 INFO L231 Difference]: Finished difference. Result has 189 places, 407 transitions, 6656 flow [2024-06-27 22:46:47,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6350, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6656, PETRI_PLACES=189, PETRI_TRANSITIONS=407} [2024-06-27 22:46:47,933 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 135 predicate places. [2024-06-27 22:46:47,933 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 407 transitions, 6656 flow [2024-06-27 22:46:47,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:47,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:47,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:47,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 22:46:47,934 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:47,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:47,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1178067683, now seen corresponding path program 9 times [2024-06-27 22:46:47,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:47,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079965467] [2024-06-27 22:46:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:47,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:48,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:48,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:48,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079965467] [2024-06-27 22:46:48,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079965467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:48,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:48,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:48,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146819056] [2024-06-27 22:46:48,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:48,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:48,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:48,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:48,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:48,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:48,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 407 transitions, 6656 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:48,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:48,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:48,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:51,163 INFO L124 PetriNetUnfolderBase]: 6247/10875 cut-off events. [2024-06-27 22:46:51,163 INFO L125 PetriNetUnfolderBase]: For 117232/117248 co-relation queries the response was YES. [2024-06-27 22:46:51,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59556 conditions, 10875 events. 6247/10875 cut-off events. For 117232/117248 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 84902 event pairs, 762 based on Foata normal form. 14/10634 useless extension candidates. Maximal degree in co-relation 59463. Up to 7419 conditions per place. [2024-06-27 22:46:51,271 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 346 selfloop transitions, 157 changer transitions 0/513 dead transitions. [2024-06-27 22:46:51,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 513 transitions, 8436 flow [2024-06-27 22:46:51,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:51,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:51,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-06-27 22:46:51,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5717592592592593 [2024-06-27 22:46:51,273 INFO L175 Difference]: Start difference. First operand has 189 places, 407 transitions, 6656 flow. Second operand 9 states and 247 transitions. [2024-06-27 22:46:51,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 513 transitions, 8436 flow [2024-06-27 22:46:51,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 513 transitions, 8267 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 22:46:51,932 INFO L231 Difference]: Finished difference. Result has 197 places, 429 transitions, 7302 flow [2024-06-27 22:46:51,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6487, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7302, PETRI_PLACES=197, PETRI_TRANSITIONS=429} [2024-06-27 22:46:51,932 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2024-06-27 22:46:51,933 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 429 transitions, 7302 flow [2024-06-27 22:46:51,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:51,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:51,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:51,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 22:46:51,933 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:51,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:51,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1178060243, now seen corresponding path program 10 times [2024-06-27 22:46:51,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:51,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524877706] [2024-06-27 22:46:51,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:51,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:52,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:52,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:52,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524877706] [2024-06-27 22:46:52,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524877706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:52,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:52,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:46:52,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267998783] [2024-06-27 22:46:52,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:52,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:46:52,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:52,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:46:52,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:46:52,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:52,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 429 transitions, 7302 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) [2024-06-27 22:46:52,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:52,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:52,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:55,386 INFO L124 PetriNetUnfolderBase]: 6255/10887 cut-off events. [2024-06-27 22:46:55,386 INFO L125 PetriNetUnfolderBase]: For 128690/128706 co-relation queries the response was YES. [2024-06-27 22:46:55,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61726 conditions, 10887 events. 6255/10887 cut-off events. For 128690/128706 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 84969 event pairs, 807 based on Foata normal form. 14/10642 useless extension candidates. Maximal degree in co-relation 61628. Up to 7579 conditions per place. [2024-06-27 22:46:55,477 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 348 selfloop transitions, 155 changer transitions 0/513 dead transitions. [2024-06-27 22:46:55,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 513 transitions, 8758 flow [2024-06-27 22:46:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 22:46:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 22:46:55,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-27 22:46:55,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 22:46:55,478 INFO L175 Difference]: Start difference. First operand has 197 places, 429 transitions, 7302 flow. Second operand 10 states and 256 transitions. [2024-06-27 22:46:55,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 513 transitions, 8758 flow [2024-06-27 22:46:56,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 513 transitions, 8444 flow, removed 112 selfloop flow, removed 3 redundant places. [2024-06-27 22:46:56,260 INFO L231 Difference]: Finished difference. Result has 205 places, 435 transitions, 7468 flow [2024-06-27 22:46:56,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7036, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7468, PETRI_PLACES=205, PETRI_TRANSITIONS=435} [2024-06-27 22:46:56,261 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 151 predicate places. [2024-06-27 22:46:56,261 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 435 transitions, 7468 flow [2024-06-27 22:46:56,261 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) [2024-06-27 22:46:56,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:46:56,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:46:56,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 22:46:56,261 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:46:56,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:46:56,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1187264453, now seen corresponding path program 11 times [2024-06-27 22:46:56,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:46:56,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90299767] [2024-06-27 22:46:56,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:46:56,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:46:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:46:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:46:57,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:46:57,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90299767] [2024-06-27 22:46:57,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90299767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:46:57,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:46:57,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:46:57,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952156960] [2024-06-27 22:46:57,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:46:57,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:46:57,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:46:57,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:46:57,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:46:57,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:46:57,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 435 transitions, 7468 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:46:57,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:46:57,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:46:57,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:46:59,800 INFO L124 PetriNetUnfolderBase]: 6549/11493 cut-off events. [2024-06-27 22:46:59,800 INFO L125 PetriNetUnfolderBase]: For 131919/131935 co-relation queries the response was YES. [2024-06-27 22:46:59,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64459 conditions, 11493 events. 6549/11493 cut-off events. For 131919/131935 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 91457 event pairs, 841 based on Foata normal form. 18/11242 useless extension candidates. Maximal degree in co-relation 64358. Up to 4730 conditions per place. [2024-06-27 22:46:59,915 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 244 selfloop transitions, 270 changer transitions 0/524 dead transitions. [2024-06-27 22:46:59,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 524 transitions, 9139 flow [2024-06-27 22:46:59,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:46:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:46:59,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 243 transitions. [2024-06-27 22:46:59,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-06-27 22:46:59,916 INFO L175 Difference]: Start difference. First operand has 205 places, 435 transitions, 7468 flow. Second operand 9 states and 243 transitions. [2024-06-27 22:46:59,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 524 transitions, 9139 flow [2024-06-27 22:47:00,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 524 transitions, 8776 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 22:47:00,672 INFO L231 Difference]: Finished difference. Result has 209 places, 453 transitions, 8029 flow [2024-06-27 22:47:00,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7116, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8029, PETRI_PLACES=209, PETRI_TRANSITIONS=453} [2024-06-27 22:47:00,672 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 155 predicate places. [2024-06-27 22:47:00,673 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 453 transitions, 8029 flow [2024-06-27 22:47:00,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:00,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:00,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:00,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 22:47:00,673 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:00,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:00,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1242205883, now seen corresponding path program 12 times [2024-06-27 22:47:00,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:00,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601072135] [2024-06-27 22:47:00,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:00,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:01,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:01,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601072135] [2024-06-27 22:47:01,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601072135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:01,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:01,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 22:47:01,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106704443] [2024-06-27 22:47:01,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:01,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 22:47:01,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:01,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 22:47:01,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 22:47:01,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:47:01,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 453 transitions, 8029 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) [2024-06-27 22:47:01,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:01,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:47:01,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:04,754 INFO L124 PetriNetUnfolderBase]: 7110/12493 cut-off events. [2024-06-27 22:47:04,755 INFO L125 PetriNetUnfolderBase]: For 153332/153348 co-relation queries the response was YES. [2024-06-27 22:47:04,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73601 conditions, 12493 events. 7110/12493 cut-off events. For 153332/153348 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 101299 event pairs, 1248 based on Foata normal form. 24/12154 useless extension candidates. Maximal degree in co-relation 73497. Up to 9487 conditions per place. [2024-06-27 22:47:04,884 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 499 selfloop transitions, 109 changer transitions 0/618 dead transitions. [2024-06-27 22:47:04,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 618 transitions, 10654 flow [2024-06-27 22:47:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 22:47:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 22:47:04,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 323 transitions. [2024-06-27 22:47:04,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5607638888888888 [2024-06-27 22:47:04,887 INFO L175 Difference]: Start difference. First operand has 209 places, 453 transitions, 8029 flow. Second operand 12 states and 323 transitions. [2024-06-27 22:47:04,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 618 transitions, 10654 flow [2024-06-27 22:47:06,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 618 transitions, 10271 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-06-27 22:47:06,242 INFO L231 Difference]: Finished difference. Result has 221 places, 510 transitions, 9078 flow [2024-06-27 22:47:06,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=7670, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9078, PETRI_PLACES=221, PETRI_TRANSITIONS=510} [2024-06-27 22:47:06,243 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 167 predicate places. [2024-06-27 22:47:06,243 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 510 transitions, 9078 flow [2024-06-27 22:47:06,243 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) [2024-06-27 22:47:06,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:06,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:06,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 22:47:06,244 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:06,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:06,244 INFO L85 PathProgramCache]: Analyzing trace with hash -568485597, now seen corresponding path program 13 times [2024-06-27 22:47:06,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:06,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069695777] [2024-06-27 22:47:06,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:06,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:06,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:06,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:06,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:06,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069695777] [2024-06-27 22:47:06,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069695777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:06,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:06,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:06,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915888447] [2024-06-27 22:47:06,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:06,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:06,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:06,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:06,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:06,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:47:06,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 510 transitions, 9078 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:06,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:06,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:47:06,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:09,901 INFO L124 PetriNetUnfolderBase]: 7199/12643 cut-off events. [2024-06-27 22:47:09,901 INFO L125 PetriNetUnfolderBase]: For 157600/157618 co-relation queries the response was YES. [2024-06-27 22:47:09,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75540 conditions, 12643 events. 7199/12643 cut-off events. For 157600/157618 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 102244 event pairs, 1037 based on Foata normal form. 18/12312 useless extension candidates. Maximal degree in co-relation 75430. Up to 9101 conditions per place. [2024-06-27 22:47:10,032 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 445 selfloop transitions, 136 changer transitions 0/591 dead transitions. [2024-06-27 22:47:10,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 591 transitions, 10838 flow [2024-06-27 22:47:10,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:47:10,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:47:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-06-27 22:47:10,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572916666666666 [2024-06-27 22:47:10,038 INFO L175 Difference]: Start difference. First operand has 221 places, 510 transitions, 9078 flow. Second operand 8 states and 214 transitions. [2024-06-27 22:47:10,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 591 transitions, 10838 flow [2024-06-27 22:47:11,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 591 transitions, 10680 flow, removed 42 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:11,294 INFO L231 Difference]: Finished difference. Result has 228 places, 523 transitions, 9608 flow [2024-06-27 22:47:11,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=8920, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9608, PETRI_PLACES=228, PETRI_TRANSITIONS=523} [2024-06-27 22:47:11,295 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 174 predicate places. [2024-06-27 22:47:11,295 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 523 transitions, 9608 flow [2024-06-27 22:47:11,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:11,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:11,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:11,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 22:47:11,295 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:11,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2074505965, now seen corresponding path program 14 times [2024-06-27 22:47:11,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:11,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883517311] [2024-06-27 22:47:11,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:11,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:11,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:11,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:11,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883517311] [2024-06-27 22:47:11,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883517311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:11,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:11,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 22:47:11,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26169211] [2024-06-27 22:47:11,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:11,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 22:47:11,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:11,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 22:47:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 22:47:12,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:47:12,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 523 transitions, 9608 flow. Second operand has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:12,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:12,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:47:12,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:15,055 INFO L124 PetriNetUnfolderBase]: 7375/12977 cut-off events. [2024-06-27 22:47:15,055 INFO L125 PetriNetUnfolderBase]: For 174664/174676 co-relation queries the response was YES. [2024-06-27 22:47:15,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78436 conditions, 12977 events. 7375/12977 cut-off events. For 174664/174676 co-relation queries the response was YES. Maximal size of possible extension queue 732. Compared 106116 event pairs, 1144 based on Foata normal form. 20/12672 useless extension candidates. Maximal degree in co-relation 78323. Up to 7842 conditions per place. [2024-06-27 22:47:15,212 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 318 selfloop transitions, 257 changer transitions 0/585 dead transitions. [2024-06-27 22:47:15,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 585 transitions, 11156 flow [2024-06-27 22:47:15,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:47:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:47:15,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-27 22:47:15,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5546875 [2024-06-27 22:47:15,214 INFO L175 Difference]: Start difference. First operand has 228 places, 523 transitions, 9608 flow. Second operand 8 states and 213 transitions. [2024-06-27 22:47:15,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 585 transitions, 11156 flow [2024-06-27 22:47:16,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 585 transitions, 10895 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:16,595 INFO L231 Difference]: Finished difference. Result has 232 places, 527 transitions, 9957 flow [2024-06-27 22:47:16,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9306, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9957, PETRI_PLACES=232, PETRI_TRANSITIONS=527} [2024-06-27 22:47:16,595 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 178 predicate places. [2024-06-27 22:47:16,595 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 527 transitions, 9957 flow [2024-06-27 22:47:16,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.555555555555555) internal successors, (131), 9 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:16,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:16,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:16,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 22:47:16,596 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:16,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:16,596 INFO L85 PathProgramCache]: Analyzing trace with hash 133198113, now seen corresponding path program 1 times [2024-06-27 22:47:16,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:16,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855540063] [2024-06-27 22:47:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:16,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:17,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:17,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855540063] [2024-06-27 22:47:17,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855540063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:17,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:17,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:47:17,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365205873] [2024-06-27 22:47:17,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:17,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:47:17,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:17,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:47:17,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:47:17,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:47:17,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 527 transitions, 9957 flow. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:17,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:17,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:47:17,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:20,569 INFO L124 PetriNetUnfolderBase]: 6854/12108 cut-off events. [2024-06-27 22:47:20,569 INFO L125 PetriNetUnfolderBase]: For 193924/194311 co-relation queries the response was YES. [2024-06-27 22:47:20,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74925 conditions, 12108 events. 6854/12108 cut-off events. For 193924/194311 co-relation queries the response was YES. Maximal size of possible extension queue 719. Compared 99679 event pairs, 2493 based on Foata normal form. 343/11987 useless extension candidates. Maximal degree in co-relation 74810. Up to 9965 conditions per place. [2024-06-27 22:47:20,683 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 494 selfloop transitions, 19 changer transitions 0/559 dead transitions. [2024-06-27 22:47:20,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 559 transitions, 11135 flow [2024-06-27 22:47:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:20,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-06-27 22:47:20,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-06-27 22:47:20,685 INFO L175 Difference]: Start difference. First operand has 232 places, 527 transitions, 9957 flow. Second operand 7 states and 171 transitions. [2024-06-27 22:47:20,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 559 transitions, 11135 flow [2024-06-27 22:47:21,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 559 transitions, 10578 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 22:47:21,705 INFO L231 Difference]: Finished difference. Result has 234 places, 531 transitions, 9508 flow [2024-06-27 22:47:21,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9400, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9508, PETRI_PLACES=234, PETRI_TRANSITIONS=531} [2024-06-27 22:47:21,706 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 180 predicate places. [2024-06-27 22:47:21,706 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 531 transitions, 9508 flow [2024-06-27 22:47:21,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:21,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:21,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:21,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 22:47:21,707 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:21,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:21,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1780673994, now seen corresponding path program 1 times [2024-06-27 22:47:21,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:21,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31784361] [2024-06-27 22:47:21,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:21,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:21,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:22,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:22,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31784361] [2024-06-27 22:47:22,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31784361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:22,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:22,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:22,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936086767] [2024-06-27 22:47:22,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:22,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:22,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:22,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:22,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:47:22,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 531 transitions, 9508 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:22,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:22,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:47:22,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:26,216 INFO L124 PetriNetUnfolderBase]: 7209/12878 cut-off events. [2024-06-27 22:47:26,216 INFO L125 PetriNetUnfolderBase]: For 171260/171469 co-relation queries the response was YES. [2024-06-27 22:47:26,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76062 conditions, 12878 events. 7209/12878 cut-off events. For 171260/171469 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 107686 event pairs, 1410 based on Foata normal form. 196/12567 useless extension candidates. Maximal degree in co-relation 75945. Up to 9707 conditions per place. [2024-06-27 22:47:26,366 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 476 selfloop transitions, 86 changer transitions 0/608 dead transitions. [2024-06-27 22:47:26,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 608 transitions, 11126 flow [2024-06-27 22:47:26,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 22:47:26,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 22:47:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-06-27 22:47:26,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.509469696969697 [2024-06-27 22:47:26,368 INFO L175 Difference]: Start difference. First operand has 234 places, 531 transitions, 9508 flow. Second operand 11 states and 269 transitions. [2024-06-27 22:47:26,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 608 transitions, 11126 flow [2024-06-27 22:47:27,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 608 transitions, 10988 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:27,683 INFO L231 Difference]: Finished difference. Result has 242 places, 541 transitions, 9715 flow [2024-06-27 22:47:27,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9370, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9715, PETRI_PLACES=242, PETRI_TRANSITIONS=541} [2024-06-27 22:47:27,685 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 188 predicate places. [2024-06-27 22:47:27,685 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 541 transitions, 9715 flow [2024-06-27 22:47:27,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:27,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:27,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:27,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 22:47:27,686 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:27,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:27,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1155745218, now seen corresponding path program 2 times [2024-06-27 22:47:27,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:27,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506307361] [2024-06-27 22:47:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:27,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:28,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:28,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:28,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506307361] [2024-06-27 22:47:28,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506307361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:28,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:28,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:28,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902013368] [2024-06-27 22:47:28,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:28,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:28,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:28,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:28,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:28,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:47:28,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 541 transitions, 9715 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:28,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:28,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:47:28,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:32,021 INFO L124 PetriNetUnfolderBase]: 7312/13031 cut-off events. [2024-06-27 22:47:32,021 INFO L125 PetriNetUnfolderBase]: For 180790/181064 co-relation queries the response was YES. [2024-06-27 22:47:32,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76698 conditions, 13031 events. 7312/13031 cut-off events. For 180790/181064 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 108836 event pairs, 1352 based on Foata normal form. 241/12754 useless extension candidates. Maximal degree in co-relation 76580. Up to 9481 conditions per place. [2024-06-27 22:47:32,166 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 456 selfloop transitions, 83 changer transitions 0/585 dead transitions. [2024-06-27 22:47:32,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 585 transitions, 11041 flow [2024-06-27 22:47:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:32,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-27 22:47:32,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5327380952380952 [2024-06-27 22:47:32,167 INFO L175 Difference]: Start difference. First operand has 242 places, 541 transitions, 9715 flow. Second operand 7 states and 179 transitions. [2024-06-27 22:47:32,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 585 transitions, 11041 flow [2024-06-27 22:47:33,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 585 transitions, 10955 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 22:47:33,877 INFO L231 Difference]: Finished difference. Result has 245 places, 542 transitions, 9811 flow [2024-06-27 22:47:33,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9629, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9811, PETRI_PLACES=245, PETRI_TRANSITIONS=542} [2024-06-27 22:47:33,878 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 191 predicate places. [2024-06-27 22:47:33,878 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 542 transitions, 9811 flow [2024-06-27 22:47:33,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:33,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:33,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:33,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 22:47:33,879 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:33,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:33,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2008227818, now seen corresponding path program 3 times [2024-06-27 22:47:33,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:33,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568350434] [2024-06-27 22:47:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:33,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:35,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:35,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:35,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568350434] [2024-06-27 22:47:35,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568350434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:35,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:35,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:35,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109989477] [2024-06-27 22:47:35,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:35,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:35,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:35,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:35,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:35,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:47:35,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 542 transitions, 9811 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:35,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:35,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:47:35,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:38,405 INFO L124 PetriNetUnfolderBase]: 7331/13088 cut-off events. [2024-06-27 22:47:38,406 INFO L125 PetriNetUnfolderBase]: For 178379/178565 co-relation queries the response was YES. [2024-06-27 22:47:38,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77157 conditions, 13088 events. 7331/13088 cut-off events. For 178379/178565 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 109719 event pairs, 1442 based on Foata normal form. 173/12736 useless extension candidates. Maximal degree in co-relation 77036. Up to 10064 conditions per place. [2024-06-27 22:47:38,539 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 449 selfloop transitions, 88 changer transitions 0/583 dead transitions. [2024-06-27 22:47:38,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 583 transitions, 11062 flow [2024-06-27 22:47:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 22:47:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 22:47:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-06-27 22:47:38,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837962962962963 [2024-06-27 22:47:38,540 INFO L175 Difference]: Start difference. First operand has 245 places, 542 transitions, 9811 flow. Second operand 9 states and 209 transitions. [2024-06-27 22:47:38,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 583 transitions, 11062 flow [2024-06-27 22:47:39,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 583 transitions, 10945 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:39,720 INFO L231 Difference]: Finished difference. Result has 251 places, 542 transitions, 9879 flow [2024-06-27 22:47:39,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9694, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9879, PETRI_PLACES=251, PETRI_TRANSITIONS=542} [2024-06-27 22:47:39,722 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 197 predicate places. [2024-06-27 22:47:39,722 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 542 transitions, 9879 flow [2024-06-27 22:47:39,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:39,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:39,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:39,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 22:47:39,723 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:39,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:39,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1829415102, now seen corresponding path program 4 times [2024-06-27 22:47:39,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:39,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340989410] [2024-06-27 22:47:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:39,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:40,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:40,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:40,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340989410] [2024-06-27 22:47:40,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340989410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:40,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:40,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:40,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853273540] [2024-06-27 22:47:40,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:40,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:40,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:40,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:40,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:40,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:47:40,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 542 transitions, 9879 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:40,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:40,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:47:40,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:43,837 INFO L124 PetriNetUnfolderBase]: 7270/12971 cut-off events. [2024-06-27 22:47:43,838 INFO L125 PetriNetUnfolderBase]: For 177579/177853 co-relation queries the response was YES. [2024-06-27 22:47:43,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76364 conditions, 12971 events. 7270/12971 cut-off events. For 177579/177853 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 108528 event pairs, 1346 based on Foata normal form. 241/12682 useless extension candidates. Maximal degree in co-relation 76241. Up to 9588 conditions per place. [2024-06-27 22:47:43,991 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 446 selfloop transitions, 82 changer transitions 0/574 dead transitions. [2024-06-27 22:47:43,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 574 transitions, 11069 flow [2024-06-27 22:47:43,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:43,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-27 22:47:43,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 22:47:43,992 INFO L175 Difference]: Start difference. First operand has 251 places, 542 transitions, 9879 flow. Second operand 7 states and 168 transitions. [2024-06-27 22:47:43,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 574 transitions, 11069 flow [2024-06-27 22:47:45,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 574 transitions, 10895 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 22:47:45,430 INFO L231 Difference]: Finished difference. Result has 252 places, 542 transitions, 9894 flow [2024-06-27 22:47:45,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9705, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9894, PETRI_PLACES=252, PETRI_TRANSITIONS=542} [2024-06-27 22:47:45,431 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 198 predicate places. [2024-06-27 22:47:45,431 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 542 transitions, 9894 flow [2024-06-27 22:47:45,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:45,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:45,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:45,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 22:47:45,432 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:45,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:45,432 INFO L85 PathProgramCache]: Analyzing trace with hash 948710664, now seen corresponding path program 1 times [2024-06-27 22:47:45,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:45,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036620537] [2024-06-27 22:47:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:45,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:46,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:46,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:46,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036620537] [2024-06-27 22:47:46,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036620537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:46,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:46,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 22:47:46,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889441501] [2024-06-27 22:47:46,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:46,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 22:47:46,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:46,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 22:47:46,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 22:47:46,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-06-27 22:47:46,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 542 transitions, 9894 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:46,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:46,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-06-27 22:47:46,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:49,234 INFO L124 PetriNetUnfolderBase]: 7694/13679 cut-off events. [2024-06-27 22:47:49,234 INFO L125 PetriNetUnfolderBase]: For 189668/189754 co-relation queries the response was YES. [2024-06-27 22:47:49,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80530 conditions, 13679 events. 7694/13679 cut-off events. For 189668/189754 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 114226 event pairs, 2263 based on Foata normal form. 69/13288 useless extension candidates. Maximal degree in co-relation 80407. Up to 10972 conditions per place. [2024-06-27 22:47:49,420 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 463 selfloop transitions, 99 changer transitions 0/585 dead transitions. [2024-06-27 22:47:49,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 585 transitions, 11316 flow [2024-06-27 22:47:49,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 22:47:49,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 22:47:49,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 174 transitions. [2024-06-27 22:47:49,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-06-27 22:47:49,422 INFO L175 Difference]: Start difference. First operand has 252 places, 542 transitions, 9894 flow. Second operand 6 states and 174 transitions. [2024-06-27 22:47:49,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 585 transitions, 11316 flow [2024-06-27 22:47:50,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 585 transitions, 11132 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 22:47:50,908 INFO L231 Difference]: Finished difference. Result has 250 places, 544 transitions, 9966 flow [2024-06-27 22:47:50,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9714, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9966, PETRI_PLACES=250, PETRI_TRANSITIONS=544} [2024-06-27 22:47:50,909 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 196 predicate places. [2024-06-27 22:47:50,909 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 544 transitions, 9966 flow [2024-06-27 22:47:50,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:50,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:50,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:50,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 22:47:50,910 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:50,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:50,910 INFO L85 PathProgramCache]: Analyzing trace with hash 948830634, now seen corresponding path program 2 times [2024-06-27 22:47:50,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:50,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679884298] [2024-06-27 22:47:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:50,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:51,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:51,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:51,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679884298] [2024-06-27 22:47:51,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679884298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:51,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:51,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:51,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986023269] [2024-06-27 22:47:51,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:51,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:51,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:51,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:51,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:51,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:47:51,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 544 transitions, 9966 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:51,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:51,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:47:51,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:47:54,896 INFO L124 PetriNetUnfolderBase]: 7814/13833 cut-off events. [2024-06-27 22:47:54,896 INFO L125 PetriNetUnfolderBase]: For 187113/187197 co-relation queries the response was YES. [2024-06-27 22:47:54,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82199 conditions, 13833 events. 7814/13833 cut-off events. For 187113/187197 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 115015 event pairs, 2263 based on Foata normal form. 65/13443 useless extension candidates. Maximal degree in co-relation 82077. Up to 11392 conditions per place. [2024-06-27 22:47:55,053 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 513 selfloop transitions, 68 changer transitions 0/603 dead transitions. [2024-06-27 22:47:55,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 603 transitions, 11796 flow [2024-06-27 22:47:55,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:47:55,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:47:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 173 transitions. [2024-06-27 22:47:55,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148809523809523 [2024-06-27 22:47:55,055 INFO L175 Difference]: Start difference. First operand has 250 places, 544 transitions, 9966 flow. Second operand 7 states and 173 transitions. [2024-06-27 22:47:55,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 603 transitions, 11796 flow [2024-06-27 22:47:56,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 603 transitions, 11595 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 22:47:56,480 INFO L231 Difference]: Finished difference. Result has 255 places, 571 transitions, 10517 flow [2024-06-27 22:47:56,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=9799, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10517, PETRI_PLACES=255, PETRI_TRANSITIONS=571} [2024-06-27 22:47:56,481 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 201 predicate places. [2024-06-27 22:47:56,481 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 571 transitions, 10517 flow [2024-06-27 22:47:56,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:56,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:47:56,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:47:56,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 22:47:56,482 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:47:56,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:47:56,482 INFO L85 PathProgramCache]: Analyzing trace with hash 948830820, now seen corresponding path program 1 times [2024-06-27 22:47:56,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:47:56,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535948558] [2024-06-27 22:47:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:47:56,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:47:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:47:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:47:57,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:47:57,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535948558] [2024-06-27 22:47:57,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535948558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:47:57,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:47:57,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:47:57,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625175821] [2024-06-27 22:47:57,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:47:57,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:47:57,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:47:57,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:47:57,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:47:57,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:47:57,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 571 transitions, 10517 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:47:57,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:47:57,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:47:57,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:00,800 INFO L124 PetriNetUnfolderBase]: 8146/14203 cut-off events. [2024-06-27 22:48:00,800 INFO L125 PetriNetUnfolderBase]: For 203940/203940 co-relation queries the response was YES. [2024-06-27 22:48:00,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84084 conditions, 14203 events. 8146/14203 cut-off events. For 203940/203940 co-relation queries the response was YES. Maximal size of possible extension queue 809. Compared 116485 event pairs, 2864 based on Foata normal form. 3/13782 useless extension candidates. Maximal degree in co-relation 83959. Up to 11876 conditions per place. [2024-06-27 22:48:00,988 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 586 selfloop transitions, 33 changer transitions 0/629 dead transitions. [2024-06-27 22:48:00,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 629 transitions, 12190 flow [2024-06-27 22:48:00,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:00,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:00,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-27 22:48:00,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5446428571428571 [2024-06-27 22:48:00,989 INFO L175 Difference]: Start difference. First operand has 255 places, 571 transitions, 10517 flow. Second operand 7 states and 183 transitions. [2024-06-27 22:48:00,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 629 transitions, 12190 flow [2024-06-27 22:48:02,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 629 transitions, 12055 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 22:48:02,615 INFO L231 Difference]: Finished difference. Result has 261 places, 583 transitions, 10665 flow [2024-06-27 22:48:02,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10383, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10665, PETRI_PLACES=261, PETRI_TRANSITIONS=583} [2024-06-27 22:48:02,616 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 207 predicate places. [2024-06-27 22:48:02,616 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 583 transitions, 10665 flow [2024-06-27 22:48:02,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:02,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:02,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:02,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 22:48:02,617 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:02,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:02,617 INFO L85 PathProgramCache]: Analyzing trace with hash -845595296, now seen corresponding path program 2 times [2024-06-27 22:48:02,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:02,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919465544] [2024-06-27 22:48:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:02,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:03,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:03,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919465544] [2024-06-27 22:48:03,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919465544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:03,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:03,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:03,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314193581] [2024-06-27 22:48:03,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:03,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:03,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:03,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:03,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:48:03,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 583 transitions, 10665 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:03,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:03,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:48:03,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:07,141 INFO L124 PetriNetUnfolderBase]: 8207/14312 cut-off events. [2024-06-27 22:48:07,141 INFO L125 PetriNetUnfolderBase]: For 208495/208501 co-relation queries the response was YES. [2024-06-27 22:48:07,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84998 conditions, 14312 events. 8207/14312 cut-off events. For 208495/208501 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 117494 event pairs, 2850 based on Foata normal form. 7/13881 useless extension candidates. Maximal degree in co-relation 84869. Up to 11924 conditions per place. [2024-06-27 22:48:07,325 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 577 selfloop transitions, 38 changer transitions 0/625 dead transitions. [2024-06-27 22:48:07,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 625 transitions, 12166 flow [2024-06-27 22:48:07,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:07,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-06-27 22:48:07,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-06-27 22:48:07,327 INFO L175 Difference]: Start difference. First operand has 261 places, 583 transitions, 10665 flow. Second operand 7 states and 177 transitions. [2024-06-27 22:48:07,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 625 transitions, 12166 flow [2024-06-27 22:48:09,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 625 transitions, 12105 flow, removed 29 selfloop flow, removed 1 redundant places. [2024-06-27 22:48:09,053 INFO L231 Difference]: Finished difference. Result has 268 places, 587 transitions, 10766 flow [2024-06-27 22:48:09,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10616, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10766, PETRI_PLACES=268, PETRI_TRANSITIONS=587} [2024-06-27 22:48:09,054 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 214 predicate places. [2024-06-27 22:48:09,054 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 587 transitions, 10766 flow [2024-06-27 22:48:09,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:09,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:09,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:09,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 22:48:09,055 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:09,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash 954395010, now seen corresponding path program 3 times [2024-06-27 22:48:09,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:09,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274132932] [2024-06-27 22:48:09,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:09,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:10,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:10,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274132932] [2024-06-27 22:48:10,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274132932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:10,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:10,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:10,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780246328] [2024-06-27 22:48:10,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:10,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:10,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:10,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:10,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:10,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-06-27 22:48:10,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 587 transitions, 10766 flow. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:10,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:10,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-06-27 22:48:10,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:14,100 INFO L124 PetriNetUnfolderBase]: 8199/14301 cut-off events. [2024-06-27 22:48:14,100 INFO L125 PetriNetUnfolderBase]: For 208356/208362 co-relation queries the response was YES. [2024-06-27 22:48:14,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84835 conditions, 14301 events. 8199/14301 cut-off events. For 208356/208362 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 117328 event pairs, 2848 based on Foata normal form. 7/13870 useless extension candidates. Maximal degree in co-relation 84701. Up to 11918 conditions per place. [2024-06-27 22:48:14,242 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 581 selfloop transitions, 36 changer transitions 0/627 dead transitions. [2024-06-27 22:48:14,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 627 transitions, 12174 flow [2024-06-27 22:48:14,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 22:48:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 22:48:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-06-27 22:48:14,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-06-27 22:48:14,244 INFO L175 Difference]: Start difference. First operand has 268 places, 587 transitions, 10766 flow. Second operand 7 states and 178 transitions. [2024-06-27 22:48:14,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 627 transitions, 12174 flow [2024-06-27 22:48:15,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 627 transitions, 12108 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-27 22:48:15,474 INFO L231 Difference]: Finished difference. Result has 273 places, 587 transitions, 10778 flow [2024-06-27 22:48:15,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10700, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10778, PETRI_PLACES=273, PETRI_TRANSITIONS=587} [2024-06-27 22:48:15,475 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 219 predicate places. [2024-06-27 22:48:15,475 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 587 transitions, 10778 flow [2024-06-27 22:48:15,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 7 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:15,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:15,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:15,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 22:48:15,557 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:15,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:15,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2008412144, now seen corresponding path program 3 times [2024-06-27 22:48:15,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:15,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396153273] [2024-06-27 22:48:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:15,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:16,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:16,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396153273] [2024-06-27 22:48:16,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396153273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:16,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:16,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 22:48:16,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671120053] [2024-06-27 22:48:16,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:16,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 22:48:16,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:16,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 22:48:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 22:48:16,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:48:16,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 587 transitions, 10778 flow. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:16,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:16,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:48:16,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 22:48:20,469 INFO L124 PetriNetUnfolderBase]: 7854/13901 cut-off events. [2024-06-27 22:48:20,469 INFO L125 PetriNetUnfolderBase]: For 199690/199843 co-relation queries the response was YES. [2024-06-27 22:48:20,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82050 conditions, 13901 events. 7854/13901 cut-off events. For 199690/199843 co-relation queries the response was YES. Maximal size of possible extension queue 797. Compared 115753 event pairs, 2305 based on Foata normal form. 98/13527 useless extension candidates. Maximal degree in co-relation 81914. Up to 11358 conditions per place. [2024-06-27 22:48:20,604 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 482 selfloop transitions, 104 changer transitions 0/614 dead transitions. [2024-06-27 22:48:20,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 614 transitions, 12070 flow [2024-06-27 22:48:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 22:48:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 22:48:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 22:48:20,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-27 22:48:20,606 INFO L175 Difference]: Start difference. First operand has 273 places, 587 transitions, 10778 flow. Second operand 8 states and 185 transitions. [2024-06-27 22:48:20,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 614 transitions, 12070 flow [2024-06-27 22:48:22,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 614 transitions, 12019 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 22:48:22,066 INFO L231 Difference]: Finished difference. Result has 277 places, 587 transitions, 10951 flow [2024-06-27 22:48:22,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=10727, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10951, PETRI_PLACES=277, PETRI_TRANSITIONS=587} [2024-06-27 22:48:22,067 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 223 predicate places. [2024-06-27 22:48:22,067 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 587 transitions, 10951 flow [2024-06-27 22:48:22,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:22,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 22:48:22,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 22:48:22,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 22:48:22,068 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 22:48:22,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 22:48:22,068 INFO L85 PathProgramCache]: Analyzing trace with hash 751107027, now seen corresponding path program 1 times [2024-06-27 22:48:22,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 22:48:22,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116642004] [2024-06-27 22:48:22,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 22:48:22,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 22:48:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 22:48:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 22:48:23,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 22:48:23,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116642004] [2024-06-27 22:48:23,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116642004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 22:48:23,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 22:48:23,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 22:48:23,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790491736] [2024-06-27 22:48:23,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 22:48:23,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 22:48:23,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 22:48:23,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 22:48:23,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 22:48:23,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-06-27 22:48:23,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 587 transitions, 10951 flow. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 8 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 22:48:23,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 22:48:23,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-06-27 22:48:23,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand