./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 21:54:59,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 21:54:59,772 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 21:54:59,778 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 21:54:59,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 21:54:59,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 21:54:59,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 21:54:59,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 21:54:59,810 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 21:54:59,814 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 21:54:59,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 21:54:59,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 21:54:59,815 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 21:54:59,817 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 21:54:59,817 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 21:54:59,817 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 21:54:59,817 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 21:54:59,818 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 21:54:59,818 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 21:54:59,818 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 21:54:59,819 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 21:54:59,820 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 21:54:59,820 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 21:54:59,820 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 21:54:59,821 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 21:54:59,821 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 21:54:59,821 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 21:54:59,821 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 21:54:59,822 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 21:54:59,822 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 21:54:59,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 21:54:59,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 21:54:59,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:54:59,824 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 21:54:59,824 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 21:54:59,824 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 21:54:59,825 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 21:54:59,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 21:54:59,825 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 21:54:59,825 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 21:54:59,826 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 21:54:59,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 21:54:59,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 21:54:59,826 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 21:55:00,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 21:55:00,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 21:55:00,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 21:55:00,141 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 21:55:00,141 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 21:55:00,142 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:55:01,283 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 21:55:01,517 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 21:55:01,518 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:55:01,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e7a86802/d2059065c05f41f29df4c637c9e5f9a8/FLAG9c54c6075 [2024-06-27 21:55:01,549 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e7a86802/d2059065c05f41f29df4c637c9e5f9a8 [2024-06-27 21:55:01,552 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 21:55:01,552 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 21:55:01,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 21:55:01,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 21:55:01,645 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 21:55:01,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 21:55:01,646 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 21:55:01,651 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 21:55:01,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:55:01" (1/2) ... [2024-06-27 21:55:01,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8a71fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:01, skipping insertion in model container [2024-06-27 21:55:01,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 09:55:01" (1/2) ... [2024-06-27 21:55:01,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@202cf556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 09:55:01, skipping insertion in model container [2024-06-27 21:55:01,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:55:01" (2/2) ... [2024-06-27 21:55:01,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e8a71fd and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:01, skipping insertion in model container [2024-06-27 21:55:01,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:55:01" (2/2) ... [2024-06-27 21:55:01,657 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 21:55:01,685 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 21:55:01,686 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] ! multithreaded || (((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )a >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) [2024-06-27 21:55:01,686 INFO L97 edCorrectnessWitness]: Location invariant before [L803-L803] ! multithreaded || (((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )a >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) [2024-06-27 21:55:01,687 INFO L97 edCorrectnessWitness]: Location invariant before [L808-L808] ! multithreaded || (((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )a >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) [2024-06-27 21:55:01,687 INFO L97 edCorrectnessWitness]: Location invariant before [L807-L807] ! multithreaded || (((((((((((((0LL - (long long )__unbuffered_p0_EAX) + (long long )a >= 0LL && (0LL - (long long )__unbuffered_p1_EAX) + (long long )x >= 0LL) && (0LL - (long long )__unbuffered_p2_EAX) + (long long )y >= 0LL) && (0LL - (long long )__unbuffered_p3_EAX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p2_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )__unbuffered_p3_EAX >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p1_EAX) + (long long )z >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p1_EAX >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )__unbuffered_p1_EAX >= 0LL) && (2LL - (long long )__unbuffered_p1_EAX) - (long long )x >= 0LL) [2024-06-27 21:55:01,687 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 21:55:01,687 INFO L106 edCorrectnessWitness]: ghost_update [L801-L801] multithreaded = 1; [2024-06-27 21:55:01,734 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 21:55:01,940 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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-06-27 21:55:02,129 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:55:02,138 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 21:55:02,175 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/thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 21:55:02,239 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 21:55:02,268 INFO L206 MainTranslator]: Completed translation [2024-06-27 21:55:02,268 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02 WrapperNode [2024-06-27 21:55:02,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 21:55:02,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 21:55:02,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 21:55:02,269 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 21:55:02,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,287 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,311 INFO L138 Inliner]: procedures = 176, calls = 50, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2024-06-27 21:55:02,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 21:55:02,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 21:55:02,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 21:55:02,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 21:55:02,321 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,321 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,336 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 21:55:02,336 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,337 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,342 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,348 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 21:55:02,349 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 21:55:02,349 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 21:55:02,349 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 21:55:02,350 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (1/1) ... [2024-06-27 21:55:02,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 21:55:02,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 21:55:02,422 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 21:55:02,456 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 21:55:02,490 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 21:55:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 21:55:02,491 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 21:55:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 21:55:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 21:55:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 21:55:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 21:55:02,492 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 21:55:02,492 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 21:55:02,493 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 21:55:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 21:55:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 21:55:02,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 21:55:02,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 21:55:02,495 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 21:55:02,674 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 21:55:02,677 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 21:55:03,014 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 21:55:03,014 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 21:55:03,109 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 21:55:03,110 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 21:55:03,110 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:55:03 BoogieIcfgContainer [2024-06-27 21:55:03,110 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 21:55:03,113 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 21:55:03,113 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 21:55:03,115 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 21:55:03,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 09:55:01" (1/4) ... [2024-06-27 21:55:03,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314cebda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 09:55:03, skipping insertion in model container [2024-06-27 21:55:03,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 09:55:01" (2/4) ... [2024-06-27 21:55:03,118 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314cebda and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:55:03, skipping insertion in model container [2024-06-27 21:55:03,119 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 09:55:02" (3/4) ... [2024-06-27 21:55:03,119 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314cebda and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 09:55:03, skipping insertion in model container [2024-06-27 21:55:03,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 09:55:03" (4/4) ... [2024-06-27 21:55:03,121 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-27 21:55:03,138 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 21:55:03,139 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 21:55:03,139 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 21:55:03,199 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 21:55:03,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 56 transitions, 128 flow [2024-06-27 21:55:03,268 INFO L124 PetriNetUnfolderBase]: 1/52 cut-off events. [2024-06-27 21:55:03,269 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:55:03,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 52 events. 1/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 85 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2024-06-27 21:55:03,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 56 transitions, 128 flow [2024-06-27 21:55:03,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 49 transitions, 110 flow [2024-06-27 21:55:03,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 21:55:03,302 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;@5306cd01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 21:55:03,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 21:55:03,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 21:55:03,307 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 21:55:03,307 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 21:55:03,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:03,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 21:55:03,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:03,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:03,313 INFO L85 PathProgramCache]: Analyzing trace with hash 223717682, now seen corresponding path program 1 times [2024-06-27 21:55:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:03,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661027665] [2024-06-27 21:55:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:03,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:03,819 INFO 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 21:55:03,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:03,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661027665] [2024-06-27 21:55:03,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661027665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:03,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:03,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 21:55:03,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711598997] [2024-06-27 21:55:03,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:03,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 21:55:03,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:03,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 21:55:03,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 21:55:03,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 56 [2024-06-27 21:55:03,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:03,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:03,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 56 [2024-06-27 21:55:03,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:04,567 INFO L124 PetriNetUnfolderBase]: 4259/6301 cut-off events. [2024-06-27 21:55:04,567 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2024-06-27 21:55:04,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12349 conditions, 6301 events. 4259/6301 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 37127 event pairs, 2762 based on Foata normal form. 1/6215 useless extension candidates. Maximal degree in co-relation 12336. Up to 5859 conditions per place. [2024-06-27 21:55:04,620 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 41 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2024-06-27 21:55:04,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 243 flow [2024-06-27 21:55:04,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 21:55:04,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 21:55:04,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-06-27 21:55:04,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7261904761904762 [2024-06-27 21:55:04,635 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 110 flow. Second operand 3 states and 122 transitions. [2024-06-27 21:55:04,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 243 flow [2024-06-27 21:55:04,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 65 transitions, 236 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 21:55:04,644 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 145 flow [2024-06-27 21:55:04,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-06-27 21:55:04,649 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2024-06-27 21:55:04,649 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 145 flow [2024-06-27 21:55:04,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:04,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:04,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:04,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 21:55:04,651 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:04,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:04,652 INFO L85 PathProgramCache]: Analyzing trace with hash -987781391, now seen corresponding path program 1 times [2024-06-27 21:55:04,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:04,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950775808] [2024-06-27 21:55:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:04,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:04,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:55:04,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:04,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950775808] [2024-06-27 21:55:04,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950775808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:04,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:04,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:55:04,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163846211] [2024-06-27 21:55:04,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:04,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:55:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:04,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:55:04,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:55:04,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-06-27 21:55:04,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:04,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:04,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-06-27 21:55:04,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:05,977 INFO L124 PetriNetUnfolderBase]: 6869/10659 cut-off events. [2024-06-27 21:55:05,977 INFO L125 PetriNetUnfolderBase]: For 1667/1689 co-relation queries the response was YES. [2024-06-27 21:55:05,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22973 conditions, 10659 events. 6869/10659 cut-off events. For 1667/1689 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 69048 event pairs, 4112 based on Foata normal form. 10/10591 useless extension candidates. Maximal degree in co-relation 22961. Up to 9309 conditions per place. [2024-06-27 21:55:06,050 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 60 selfloop transitions, 9 changer transitions 0/86 dead transitions. [2024-06-27 21:55:06,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 374 flow [2024-06-27 21:55:06,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:55:06,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:55:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-06-27 21:55:06,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2024-06-27 21:55:06,054 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 145 flow. Second operand 4 states and 157 transitions. [2024-06-27 21:55:06,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 374 flow [2024-06-27 21:55:06,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 86 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 21:55:06,057 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 216 flow [2024-06-27 21:55:06,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-06-27 21:55:06,058 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2024-06-27 21:55:06,058 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 216 flow [2024-06-27 21:55:06,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:06,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:06,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:06,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 21:55:06,059 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:06,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash -70102224, now seen corresponding path program 1 times [2024-06-27 21:55:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:06,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601196086] [2024-06-27 21:55:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:06,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:06,304 INFO 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 21:55:06,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:06,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601196086] [2024-06-27 21:55:06,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601196086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:06,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:06,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:55:06,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424679391] [2024-06-27 21:55:06,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:06,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:55:06,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:06,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:55:06,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:55:06,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-06-27 21:55:06,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:06,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:06,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-06-27 21:55:06,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:07,336 INFO L124 PetriNetUnfolderBase]: 6853/10001 cut-off events. [2024-06-27 21:55:07,336 INFO L125 PetriNetUnfolderBase]: For 4356/4439 co-relation queries the response was YES. [2024-06-27 21:55:07,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24873 conditions, 10001 events. 6853/10001 cut-off events. For 4356/4439 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 60231 event pairs, 2631 based on Foata normal form. 32/10023 useless extension candidates. Maximal degree in co-relation 24858. Up to 9235 conditions per place. [2024-06-27 21:55:07,407 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 69 selfloop transitions, 12 changer transitions 0/98 dead transitions. [2024-06-27 21:55:07,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 98 transitions, 474 flow [2024-06-27 21:55:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:55:07,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:55:07,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-06-27 21:55:07,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6821428571428572 [2024-06-27 21:55:07,506 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 216 flow. Second operand 5 states and 191 transitions. [2024-06-27 21:55:07,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 98 transitions, 474 flow [2024-06-27 21:55:07,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 98 transitions, 470 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 21:55:07,510 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 262 flow [2024-06-27 21:55:07,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=262, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-06-27 21:55:07,511 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 7 predicate places. [2024-06-27 21:55:07,511 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 262 flow [2024-06-27 21:55:07,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:07,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:07,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:07,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 21:55:07,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:07,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:07,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1310696065, now seen corresponding path program 1 times [2024-06-27 21:55:07,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:07,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515020025] [2024-06-27 21:55:07,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:07,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:07,737 INFO 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 21:55:07,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:07,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515020025] [2024-06-27 21:55:07,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515020025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:07,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:07,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 21:55:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160842397] [2024-06-27 21:55:07,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:07,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 21:55:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 21:55:07,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 21:55:07,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-06-27 21:55:07,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:07,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:07,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-06-27 21:55:07,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:08,720 INFO L124 PetriNetUnfolderBase]: 6790/10325 cut-off events. [2024-06-27 21:55:08,720 INFO L125 PetriNetUnfolderBase]: For 8125/8135 co-relation queries the response was YES. [2024-06-27 21:55:08,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27080 conditions, 10325 events. 6790/10325 cut-off events. For 8125/8135 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 65494 event pairs, 3673 based on Foata normal form. 6/10318 useless extension candidates. Maximal degree in co-relation 27062. Up to 9204 conditions per place. [2024-06-27 21:55:08,786 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 67 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2024-06-27 21:55:08,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 95 transitions, 530 flow [2024-06-27 21:55:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:55:08,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:55:08,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-06-27 21:55:08,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-06-27 21:55:08,790 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 262 flow. Second operand 4 states and 152 transitions. [2024-06-27 21:55:08,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 95 transitions, 530 flow [2024-06-27 21:55:08,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 95 transitions, 494 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 21:55:08,800 INFO L231 Difference]: Finished difference. Result has 71 places, 73 transitions, 339 flow [2024-06-27 21:55:08,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=339, PETRI_PLACES=71, PETRI_TRANSITIONS=73} [2024-06-27 21:55:08,802 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2024-06-27 21:55:08,802 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 73 transitions, 339 flow [2024-06-27 21:55:08,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:08,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:08,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:08,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 21:55:08,803 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:08,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:08,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1146871676, now seen corresponding path program 1 times [2024-06-27 21:55:08,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:08,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612969753] [2024-06-27 21:55:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:08,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:08,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:09,135 INFO 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 21:55:09,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:09,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612969753] [2024-06-27 21:55:09,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612969753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:09,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:09,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:55:09,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580780789] [2024-06-27 21:55:09,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:09,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:55:09,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:09,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:55:09,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:55:09,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-06-27 21:55:09,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 73 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:09,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:09,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-06-27 21:55:09,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:10,376 INFO L124 PetriNetUnfolderBase]: 8211/11970 cut-off events. [2024-06-27 21:55:10,376 INFO L125 PetriNetUnfolderBase]: For 15574/15837 co-relation queries the response was YES. [2024-06-27 21:55:10,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35244 conditions, 11970 events. 8211/11970 cut-off events. For 15574/15837 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 73984 event pairs, 3222 based on Foata normal form. 69/11965 useless extension candidates. Maximal degree in co-relation 35224. Up to 10972 conditions per place. [2024-06-27 21:55:10,455 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 74 selfloop transitions, 25 changer transitions 0/118 dead transitions. [2024-06-27 21:55:10,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 118 transitions, 703 flow [2024-06-27 21:55:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:55:10,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:55:10,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 195 transitions. [2024-06-27 21:55:10,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6964285714285714 [2024-06-27 21:55:10,460 INFO L175 Difference]: Start difference. First operand has 71 places, 73 transitions, 339 flow. Second operand 5 states and 195 transitions. [2024-06-27 21:55:10,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 118 transitions, 703 flow [2024-06-27 21:55:10,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 118 transitions, 695 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-06-27 21:55:10,481 INFO L231 Difference]: Finished difference. Result has 76 places, 81 transitions, 452 flow [2024-06-27 21:55:10,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=76, PETRI_TRANSITIONS=81} [2024-06-27 21:55:10,484 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 14 predicate places. [2024-06-27 21:55:10,484 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 81 transitions, 452 flow [2024-06-27 21:55:10,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:10,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:10,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:10,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 21:55:10,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:10,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:10,487 INFO L85 PathProgramCache]: Analyzing trace with hash -366725786, now seen corresponding path program 2 times [2024-06-27 21:55:10,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:10,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338937604] [2024-06-27 21:55:10,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:10,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:10,785 INFO 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 21:55:10,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:10,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338937604] [2024-06-27 21:55:10,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338937604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:10,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:10,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:55:10,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001267885] [2024-06-27 21:55:10,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:10,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:55:10,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:10,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:55:10,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:55:10,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-06-27 21:55:10,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 81 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:10,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:10,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-06-27 21:55:10,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:12,097 INFO L124 PetriNetUnfolderBase]: 8202/11958 cut-off events. [2024-06-27 21:55:12,097 INFO L125 PetriNetUnfolderBase]: For 24237/24548 co-relation queries the response was YES. [2024-06-27 21:55:12,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38534 conditions, 11958 events. 8202/11958 cut-off events. For 24237/24548 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 73545 event pairs, 3222 based on Foata normal form. 79/11965 useless extension candidates. Maximal degree in co-relation 38511. Up to 10982 conditions per place. [2024-06-27 21:55:12,187 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 66 selfloop transitions, 21 changer transitions 0/106 dead transitions. [2024-06-27 21:55:12,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 106 transitions, 688 flow [2024-06-27 21:55:12,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:55:12,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:55:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-06-27 21:55:12,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7008928571428571 [2024-06-27 21:55:12,189 INFO L175 Difference]: Start difference. First operand has 76 places, 81 transitions, 452 flow. Second operand 4 states and 157 transitions. [2024-06-27 21:55:12,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 106 transitions, 688 flow [2024-06-27 21:55:12,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 106 transitions, 645 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-27 21:55:12,217 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 469 flow [2024-06-27 21:55:12,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=469, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-06-27 21:55:12,220 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 17 predicate places. [2024-06-27 21:55:12,220 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 469 flow [2024-06-27 21:55:12,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:12,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:12,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:12,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 21:55:12,221 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:12,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash 708477662, now seen corresponding path program 1 times [2024-06-27 21:55:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:12,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906066939] [2024-06-27 21:55:12,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:12,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:12,495 INFO 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 21:55:12,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:12,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906066939] [2024-06-27 21:55:12,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906066939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:12,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:12,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:55:12,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975391432] [2024-06-27 21:55:12,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:12,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:55:12,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:12,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:55:12,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:55:12,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-06-27 21:55:12,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 469 flow. Second operand has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:12,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:12,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-06-27 21:55:12,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:13,587 INFO L124 PetriNetUnfolderBase]: 6813/9900 cut-off events. [2024-06-27 21:55:13,587 INFO L125 PetriNetUnfolderBase]: For 21115/21154 co-relation queries the response was YES. [2024-06-27 21:55:13,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32340 conditions, 9900 events. 6813/9900 cut-off events. For 21115/21154 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 60257 event pairs, 2996 based on Foata normal form. 19/9900 useless extension candidates. Maximal degree in co-relation 32315. Up to 9195 conditions per place. [2024-06-27 21:55:13,644 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 85 selfloop transitions, 14 changer transitions 0/116 dead transitions. [2024-06-27 21:55:13,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 116 transitions, 770 flow [2024-06-27 21:55:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:55:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:55:13,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 187 transitions. [2024-06-27 21:55:13,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6678571428571428 [2024-06-27 21:55:13,649 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 469 flow. Second operand 5 states and 187 transitions. [2024-06-27 21:55:13,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 116 transitions, 770 flow [2024-06-27 21:55:13,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 116 transitions, 728 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:55:13,669 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 493 flow [2024-06-27 21:55:13,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=493, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2024-06-27 21:55:13,670 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 19 predicate places. [2024-06-27 21:55:13,670 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 493 flow [2024-06-27 21:55:13,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.666666666666668) internal successors, (142), 6 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:13,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:13,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:13,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 21:55:13,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:13,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:13,672 INFO L85 PathProgramCache]: Analyzing trace with hash 192902194, now seen corresponding path program 1 times [2024-06-27 21:55:13,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:13,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751110286] [2024-06-27 21:55:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:13,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:14,083 INFO 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 21:55:14,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:14,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751110286] [2024-06-27 21:55:14,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751110286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:14,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:14,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:55:14,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115880512] [2024-06-27 21:55:14,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:14,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:55:14,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:14,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:55:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:55:14,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:14,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 84 transitions, 493 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 21:55:14,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:14,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:14,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:15,269 INFO L124 PetriNetUnfolderBase]: 8661/12505 cut-off events. [2024-06-27 21:55:15,269 INFO L125 PetriNetUnfolderBase]: For 32273/32446 co-relation queries the response was YES. [2024-06-27 21:55:15,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42243 conditions, 12505 events. 8661/12505 cut-off events. For 32273/32446 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 75824 event pairs, 3384 based on Foata normal form. 40/12512 useless extension candidates. Maximal degree in co-relation 42217. Up to 11498 conditions per place. [2024-06-27 21:55:15,338 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 106 selfloop transitions, 27 changer transitions 0/149 dead transitions. [2024-06-27 21:55:15,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 149 transitions, 1045 flow [2024-06-27 21:55:15,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:55:15,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:55:15,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-06-27 21:55:15,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755952380952381 [2024-06-27 21:55:15,342 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 493 flow. Second operand 6 states and 227 transitions. [2024-06-27 21:55:15,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 149 transitions, 1045 flow [2024-06-27 21:55:15,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 149 transitions, 1005 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 21:55:15,369 INFO L231 Difference]: Finished difference. Result has 86 places, 101 transitions, 681 flow [2024-06-27 21:55:15,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=681, PETRI_PLACES=86, PETRI_TRANSITIONS=101} [2024-06-27 21:55:15,371 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 24 predicate places. [2024-06-27 21:55:15,372 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 681 flow [2024-06-27 21:55:15,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 21:55:15,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:15,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:15,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 21:55:15,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:15,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:15,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1516409662, now seen corresponding path program 2 times [2024-06-27 21:55:15,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:15,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853777253] [2024-06-27 21:55:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:15,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:15,638 INFO 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 21:55:15,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:15,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853777253] [2024-06-27 21:55:15,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853777253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:15,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:15,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:55:15,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247834197] [2024-06-27 21:55:15,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:15,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:55:15,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:15,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:55:15,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:55:15,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:15,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 681 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 21:55:15,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:15,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:15,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:16,786 INFO L124 PetriNetUnfolderBase]: 8691/12555 cut-off events. [2024-06-27 21:55:16,786 INFO L125 PetriNetUnfolderBase]: For 41805/42107 co-relation queries the response was YES. [2024-06-27 21:55:16,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45344 conditions, 12555 events. 8691/12555 cut-off events. For 41805/42107 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 76241 event pairs, 3356 based on Foata normal form. 81/12614 useless extension candidates. Maximal degree in co-relation 45315. Up to 11567 conditions per place. [2024-06-27 21:55:16,856 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 122 selfloop transitions, 26 changer transitions 0/164 dead transitions. [2024-06-27 21:55:16,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 164 transitions, 1222 flow [2024-06-27 21:55:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:55:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:55:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 260 transitions. [2024-06-27 21:55:16,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2024-06-27 21:55:16,858 INFO L175 Difference]: Start difference. First operand has 86 places, 101 transitions, 681 flow. Second operand 7 states and 260 transitions. [2024-06-27 21:55:16,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 164 transitions, 1222 flow [2024-06-27 21:55:16,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 164 transitions, 1168 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-27 21:55:16,893 INFO L231 Difference]: Finished difference. Result has 92 places, 107 transitions, 757 flow [2024-06-27 21:55:16,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=757, PETRI_PLACES=92, PETRI_TRANSITIONS=107} [2024-06-27 21:55:16,894 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 30 predicate places. [2024-06-27 21:55:16,894 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 107 transitions, 757 flow [2024-06-27 21:55:16,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 21:55:16,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:16,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:16,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 21:55:16,895 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:16,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:16,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1516404082, now seen corresponding path program 3 times [2024-06-27 21:55:16,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:16,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947887198] [2024-06-27 21:55:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:16,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:17,168 INFO 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 21:55:17,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:17,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947887198] [2024-06-27 21:55:17,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947887198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:17,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:17,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:55:17,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30284837] [2024-06-27 21:55:17,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:17,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:55:17,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:17,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:55:17,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:55:17,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:17,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 107 transitions, 757 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 21:55:17,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:17,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:17,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:18,553 INFO L124 PetriNetUnfolderBase]: 8682/13169 cut-off events. [2024-06-27 21:55:18,553 INFO L125 PetriNetUnfolderBase]: For 47900/48142 co-relation queries the response was YES. [2024-06-27 21:55:18,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46137 conditions, 13169 events. 8682/13169 cut-off events. For 47900/48142 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 84705 event pairs, 4334 based on Foata normal form. 65/13130 useless extension candidates. Maximal degree in co-relation 46106. Up to 11558 conditions per place. [2024-06-27 21:55:18,624 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 101 selfloop transitions, 25 changer transitions 0/142 dead transitions. [2024-06-27 21:55:18,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 142 transitions, 1098 flow [2024-06-27 21:55:18,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:55:18,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:55:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 190 transitions. [2024-06-27 21:55:18,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-06-27 21:55:18,626 INFO L175 Difference]: Start difference. First operand has 92 places, 107 transitions, 757 flow. Second operand 5 states and 190 transitions. [2024-06-27 21:55:18,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 142 transitions, 1098 flow [2024-06-27 21:55:18,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 1006 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 21:55:18,690 INFO L231 Difference]: Finished difference. Result has 93 places, 107 transitions, 726 flow [2024-06-27 21:55:18,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=726, PETRI_PLACES=93, PETRI_TRANSITIONS=107} [2024-06-27 21:55:18,691 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 31 predicate places. [2024-06-27 21:55:18,691 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 726 flow [2024-06-27 21:55:18,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 21:55:18,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:18,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:18,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 21:55:18,692 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:18,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:18,693 INFO L85 PathProgramCache]: Analyzing trace with hash -28089719, now seen corresponding path program 1 times [2024-06-27 21:55:18,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:18,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397236483] [2024-06-27 21:55:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:18,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:18,941 INFO 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 21:55:18,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:18,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397236483] [2024-06-27 21:55:18,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397236483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:18,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:18,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:55:18,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069791554] [2024-06-27 21:55:18,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:18,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:55:18,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:18,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:55:18,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:55:18,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:18,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 107 transitions, 726 flow. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:18,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:18,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:18,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:19,948 INFO L124 PetriNetUnfolderBase]: 8082/12251 cut-off events. [2024-06-27 21:55:19,949 INFO L125 PetriNetUnfolderBase]: For 51710/51769 co-relation queries the response was YES. [2024-06-27 21:55:19,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43839 conditions, 12251 events. 8082/12251 cut-off events. For 51710/51769 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 80659 event pairs, 4629 based on Foata normal form. 63/12205 useless extension candidates. Maximal degree in co-relation 43806. Up to 10776 conditions per place. [2024-06-27 21:55:20,029 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 105 selfloop transitions, 14 changer transitions 0/139 dead transitions. [2024-06-27 21:55:20,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 139 transitions, 1120 flow [2024-06-27 21:55:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:55:20,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:55:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-06-27 21:55:20,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6473214285714286 [2024-06-27 21:55:20,031 INFO L175 Difference]: Start difference. First operand has 93 places, 107 transitions, 726 flow. Second operand 4 states and 145 transitions. [2024-06-27 21:55:20,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 139 transitions, 1120 flow [2024-06-27 21:55:20,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 139 transitions, 1064 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 21:55:20,076 INFO L231 Difference]: Finished difference. Result has 94 places, 120 transitions, 849 flow [2024-06-27 21:55:20,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=676, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=849, PETRI_PLACES=94, PETRI_TRANSITIONS=120} [2024-06-27 21:55:20,076 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 32 predicate places. [2024-06-27 21:55:20,077 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 120 transitions, 849 flow [2024-06-27 21:55:20,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 21:55:20,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:20,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:20,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 21:55:20,077 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:20,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:20,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1682140389, now seen corresponding path program 1 times [2024-06-27 21:55:20,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:20,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845337638] [2024-06-27 21:55:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:20,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:20,347 INFO 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 21:55:20,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:20,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845337638] [2024-06-27 21:55:20,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845337638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:20,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:20,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:55:20,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085608536] [2024-06-27 21:55:20,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:20,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:55:20,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:20,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:55:20,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:55:20,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-06-27 21:55:20,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 120 transitions, 849 flow. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:55:20,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:20,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-06-27 21:55:20,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:21,510 INFO L124 PetriNetUnfolderBase]: 9764/14073 cut-off events. [2024-06-27 21:55:21,510 INFO L125 PetriNetUnfolderBase]: For 83836/84215 co-relation queries the response was YES. [2024-06-27 21:55:21,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57775 conditions, 14073 events. 9764/14073 cut-off events. For 83836/84215 co-relation queries the response was YES. Maximal size of possible extension queue 691. Compared 87981 event pairs, 2532 based on Foata normal form. 102/13821 useless extension candidates. Maximal degree in co-relation 57741. Up to 12559 conditions per place. [2024-06-27 21:55:21,622 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 98 selfloop transitions, 49 changer transitions 0/174 dead transitions. [2024-06-27 21:55:21,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 174 transitions, 1391 flow [2024-06-27 21:55:21,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:55:21,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:55:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-06-27 21:55:21,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-06-27 21:55:21,624 INFO L175 Difference]: Start difference. First operand has 94 places, 120 transitions, 849 flow. Second operand 6 states and 231 transitions. [2024-06-27 21:55:21,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 174 transitions, 1391 flow [2024-06-27 21:55:21,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 174 transitions, 1381 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-27 21:55:21,694 INFO L231 Difference]: Finished difference. Result has 100 places, 126 transitions, 1021 flow [2024-06-27 21:55:21,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1021, PETRI_PLACES=100, PETRI_TRANSITIONS=126} [2024-06-27 21:55:21,694 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 38 predicate places. [2024-06-27 21:55:21,695 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 126 transitions, 1021 flow [2024-06-27 21:55:21,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:55:21,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:21,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:21,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 21:55:21,696 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:21,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash 93665765, now seen corresponding path program 2 times [2024-06-27 21:55:21,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:21,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298314055] [2024-06-27 21:55:21,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:21,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:21,967 INFO 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 21:55:21,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:21,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298314055] [2024-06-27 21:55:21,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298314055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:21,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:21,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:55:21,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992710263] [2024-06-27 21:55:21,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:21,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:55:21,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:21,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:55:21,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:55:22,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-06-27 21:55:22,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 126 transitions, 1021 flow. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:55:22,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:22,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-06-27 21:55:22,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:23,651 INFO L124 PetriNetUnfolderBase]: 9848/14177 cut-off events. [2024-06-27 21:55:23,651 INFO L125 PetriNetUnfolderBase]: For 105717/106215 co-relation queries the response was YES. [2024-06-27 21:55:23,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61935 conditions, 14177 events. 9848/14177 cut-off events. For 105717/106215 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 88628 event pairs, 3138 based on Foata normal form. 131/13936 useless extension candidates. Maximal degree in co-relation 61898. Up to 12847 conditions per place. [2024-06-27 21:55:23,740 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 101 selfloop transitions, 45 changer transitions 0/173 dead transitions. [2024-06-27 21:55:23,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 173 transitions, 1461 flow [2024-06-27 21:55:23,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:55:23,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:55:23,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-06-27 21:55:23,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6755952380952381 [2024-06-27 21:55:23,741 INFO L175 Difference]: Start difference. First operand has 100 places, 126 transitions, 1021 flow. Second operand 6 states and 227 transitions. [2024-06-27 21:55:23,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 173 transitions, 1461 flow [2024-06-27 21:55:23,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 173 transitions, 1377 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-06-27 21:55:23,851 INFO L231 Difference]: Finished difference. Result has 104 places, 129 transitions, 1084 flow [2024-06-27 21:55:23,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1084, PETRI_PLACES=104, PETRI_TRANSITIONS=129} [2024-06-27 21:55:23,852 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 42 predicate places. [2024-06-27 21:55:23,852 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 129 transitions, 1084 flow [2024-06-27 21:55:23,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:55:23,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:23,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:23,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 21:55:23,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:23,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:23,853 INFO L85 PathProgramCache]: Analyzing trace with hash -236117083, now seen corresponding path program 3 times [2024-06-27 21:55:23,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:23,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183312946] [2024-06-27 21:55:23,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:23,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:24,121 INFO 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 21:55:24,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:24,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183312946] [2024-06-27 21:55:24,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183312946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:24,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:24,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:55:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678719287] [2024-06-27 21:55:24,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:24,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:55:24,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:24,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:55:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:55:24,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-06-27 21:55:24,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 129 transitions, 1084 flow. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:55:24,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:24,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-06-27 21:55:24,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:25,652 INFO L124 PetriNetUnfolderBase]: 9816/14148 cut-off events. [2024-06-27 21:55:25,653 INFO L125 PetriNetUnfolderBase]: For 113357/113851 co-relation queries the response was YES. [2024-06-27 21:55:25,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62401 conditions, 14148 events. 9816/14148 cut-off events. For 113357/113851 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 88549 event pairs, 2522 based on Foata normal form. 182/13967 useless extension candidates. Maximal degree in co-relation 62362. Up to 12769 conditions per place. [2024-06-27 21:55:25,734 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 96 selfloop transitions, 41 changer transitions 0/164 dead transitions. [2024-06-27 21:55:25,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 164 transitions, 1444 flow [2024-06-27 21:55:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:55:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:55:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 193 transitions. [2024-06-27 21:55:25,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6892857142857143 [2024-06-27 21:55:25,736 INFO L175 Difference]: Start difference. First operand has 104 places, 129 transitions, 1084 flow. Second operand 5 states and 193 transitions. [2024-06-27 21:55:25,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 164 transitions, 1444 flow [2024-06-27 21:55:25,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 164 transitions, 1327 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 21:55:25,831 INFO L231 Difference]: Finished difference. Result has 105 places, 129 transitions, 1065 flow [2024-06-27 21:55:25,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1065, PETRI_PLACES=105, PETRI_TRANSITIONS=129} [2024-06-27 21:55:25,832 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 43 predicate places. [2024-06-27 21:55:25,832 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 129 transitions, 1065 flow [2024-06-27 21:55:25,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 21:55:25,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:25,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:25,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 21:55:25,833 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:25,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:25,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1479892781, now seen corresponding path program 1 times [2024-06-27 21:55:25,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:25,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419523401] [2024-06-27 21:55:25,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:25,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:26,094 INFO 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 21:55:26,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419523401] [2024-06-27 21:55:26,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419523401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:26,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:26,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:55:26,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047464346] [2024-06-27 21:55:26,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:26,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:55:26,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:26,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:55:26,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:55:26,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:26,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 129 transitions, 1065 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:26,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:26,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:26,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:27,840 INFO L124 PetriNetUnfolderBase]: 10797/15494 cut-off events. [2024-06-27 21:55:27,841 INFO L125 PetriNetUnfolderBase]: For 116112/116597 co-relation queries the response was YES. [2024-06-27 21:55:27,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66882 conditions, 15494 events. 10797/15494 cut-off events. For 116112/116597 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 96573 event pairs, 2656 based on Foata normal form. 179/15592 useless extension candidates. Maximal degree in co-relation 66842. Up to 13604 conditions per place. [2024-06-27 21:55:27,981 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 145 selfloop transitions, 43 changer transitions 0/206 dead transitions. [2024-06-27 21:55:27,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 206 transitions, 1819 flow [2024-06-27 21:55:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:55:27,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:55:27,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 266 transitions. [2024-06-27 21:55:27,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-06-27 21:55:27,982 INFO L175 Difference]: Start difference. First operand has 105 places, 129 transitions, 1065 flow. Second operand 7 states and 266 transitions. [2024-06-27 21:55:27,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 206 transitions, 1819 flow [2024-06-27 21:55:28,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 206 transitions, 1712 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 21:55:28,107 INFO L231 Difference]: Finished difference. Result has 110 places, 140 transitions, 1205 flow [2024-06-27 21:55:28,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1205, PETRI_PLACES=110, PETRI_TRANSITIONS=140} [2024-06-27 21:55:28,108 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 48 predicate places. [2024-06-27 21:55:28,109 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 140 transitions, 1205 flow [2024-06-27 21:55:28,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:28,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:28,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:28,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 21:55:28,109 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:28,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:28,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1391179151, now seen corresponding path program 2 times [2024-06-27 21:55:28,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:28,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975472658] [2024-06-27 21:55:28,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:28,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:28,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:55:28,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:28,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975472658] [2024-06-27 21:55:28,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975472658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:28,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:28,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:55:28,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096252878] [2024-06-27 21:55:28,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:28,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:55:28,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:28,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:55:28,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:55:28,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:28,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 140 transitions, 1205 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:28,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:28,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:28,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:30,003 INFO L124 PetriNetUnfolderBase]: 10977/16166 cut-off events. [2024-06-27 21:55:30,003 INFO L125 PetriNetUnfolderBase]: For 137600/138011 co-relation queries the response was YES. [2024-06-27 21:55:30,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71103 conditions, 16166 events. 10977/16166 cut-off events. For 137600/138011 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 104888 event pairs, 4507 based on Foata normal form. 153/16200 useless extension candidates. Maximal degree in co-relation 71060. Up to 14386 conditions per place. [2024-06-27 21:55:30,116 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 145 selfloop transitions, 36 changer transitions 0/199 dead transitions. [2024-06-27 21:55:30,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 199 transitions, 1748 flow [2024-06-27 21:55:30,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:55:30,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:55:30,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 260 transitions. [2024-06-27 21:55:30,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6632653061224489 [2024-06-27 21:55:30,117 INFO L175 Difference]: Start difference. First operand has 110 places, 140 transitions, 1205 flow. Second operand 7 states and 260 transitions. [2024-06-27 21:55:30,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 199 transitions, 1748 flow [2024-06-27 21:55:30,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 199 transitions, 1689 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 21:55:30,256 INFO L231 Difference]: Finished difference. Result has 115 places, 142 transitions, 1262 flow [2024-06-27 21:55:30,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1262, PETRI_PLACES=115, PETRI_TRANSITIONS=142} [2024-06-27 21:55:30,257 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 53 predicate places. [2024-06-27 21:55:30,257 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 142 transitions, 1262 flow [2024-06-27 21:55:30,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:30,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:30,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:30,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 21:55:30,258 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:30,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:30,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1391327021, now seen corresponding path program 3 times [2024-06-27 21:55:30,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:30,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090617399] [2024-06-27 21:55:30,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:30,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:30,507 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 21:55:30,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:30,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090617399] [2024-06-27 21:55:30,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090617399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:30,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:30,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:55:30,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017863432] [2024-06-27 21:55:30,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:30,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:55:30,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:30,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:55:30,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:55:30,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:30,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 142 transitions, 1262 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:30,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:30,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:30,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:32,462 INFO L124 PetriNetUnfolderBase]: 11107/16317 cut-off events. [2024-06-27 21:55:32,462 INFO L125 PetriNetUnfolderBase]: For 149433/149944 co-relation queries the response was YES. [2024-06-27 21:55:32,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73128 conditions, 16317 events. 11107/16317 cut-off events. For 149433/149944 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 105112 event pairs, 3899 based on Foata normal form. 173/16410 useless extension candidates. Maximal degree in co-relation 73083. Up to 14394 conditions per place. [2024-06-27 21:55:32,572 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 148 selfloop transitions, 40 changer transitions 0/206 dead transitions. [2024-06-27 21:55:32,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 206 transitions, 1849 flow [2024-06-27 21:55:32,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 21:55:32,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 21:55:32,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 263 transitions. [2024-06-27 21:55:32,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6709183673469388 [2024-06-27 21:55:32,574 INFO L175 Difference]: Start difference. First operand has 115 places, 142 transitions, 1262 flow. Second operand 7 states and 263 transitions. [2024-06-27 21:55:32,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 206 transitions, 1849 flow [2024-06-27 21:55:32,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 206 transitions, 1767 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 21:55:32,739 INFO L231 Difference]: Finished difference. Result has 118 places, 146 transitions, 1333 flow [2024-06-27 21:55:32,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1180, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1333, PETRI_PLACES=118, PETRI_TRANSITIONS=146} [2024-06-27 21:55:32,740 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 56 predicate places. [2024-06-27 21:55:32,740 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 146 transitions, 1333 flow [2024-06-27 21:55:32,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:32,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:32,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:32,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 21:55:32,741 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:32,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:32,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1275816829, now seen corresponding path program 4 times [2024-06-27 21:55:32,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:32,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437330819] [2024-06-27 21:55:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:32,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:32,999 INFO 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 21:55:32,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:32,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437330819] [2024-06-27 21:55:32,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437330819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:32,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:32,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:55:32,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176475684] [2024-06-27 21:55:32,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:33,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:55:33,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:33,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:55:33,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:55:33,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:33,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 146 transitions, 1333 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:33,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:33,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:33,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:35,217 INFO L124 PetriNetUnfolderBase]: 11050/16279 cut-off events. [2024-06-27 21:55:35,218 INFO L125 PetriNetUnfolderBase]: For 161009/161418 co-relation queries the response was YES. [2024-06-27 21:55:35,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73562 conditions, 16279 events. 11050/16279 cut-off events. For 161009/161418 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 105670 event pairs, 4507 based on Foata normal form. 150/16340 useless extension candidates. Maximal degree in co-relation 73515. Up to 14572 conditions per place. [2024-06-27 21:55:35,335 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 166 selfloop transitions, 31 changer transitions 0/215 dead transitions. [2024-06-27 21:55:35,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 215 transitions, 1940 flow [2024-06-27 21:55:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:55:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:55:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2024-06-27 21:55:35,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6540178571428571 [2024-06-27 21:55:35,337 INFO L175 Difference]: Start difference. First operand has 118 places, 146 transitions, 1333 flow. Second operand 8 states and 293 transitions. [2024-06-27 21:55:35,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 215 transitions, 1940 flow [2024-06-27 21:55:35,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 215 transitions, 1879 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 21:55:35,495 INFO L231 Difference]: Finished difference. Result has 123 places, 148 transitions, 1386 flow [2024-06-27 21:55:35,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1386, PETRI_PLACES=123, PETRI_TRANSITIONS=148} [2024-06-27 21:55:35,496 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 61 predicate places. [2024-06-27 21:55:35,496 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 148 transitions, 1386 flow [2024-06-27 21:55:35,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:35,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:35,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:35,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 21:55:35,497 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:35,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:35,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1270454449, now seen corresponding path program 5 times [2024-06-27 21:55:35,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:35,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510828206] [2024-06-27 21:55:35,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:35,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:35,768 INFO 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 21:55:35,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:35,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510828206] [2024-06-27 21:55:35,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510828206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:35,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:35,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:55:35,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838988850] [2024-06-27 21:55:35,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:35,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:55:35,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:35,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:55:35,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:55:35,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:35,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 148 transitions, 1386 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:35,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:35,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:35,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:37,438 INFO L124 PetriNetUnfolderBase]: 11376/16739 cut-off events. [2024-06-27 21:55:37,438 INFO L125 PetriNetUnfolderBase]: For 177770/178161 co-relation queries the response was YES. [2024-06-27 21:55:37,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77088 conditions, 16739 events. 11376/16739 cut-off events. For 177770/178161 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 108831 event pairs, 4631 based on Foata normal form. 131/16763 useless extension candidates. Maximal degree in co-relation 77039. Up to 15009 conditions per place. [2024-06-27 21:55:37,569 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 151 selfloop transitions, 29 changer transitions 0/198 dead transitions. [2024-06-27 21:55:37,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 198 transitions, 1917 flow [2024-06-27 21:55:37,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:55:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:55:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-06-27 21:55:37,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6726190476190477 [2024-06-27 21:55:37,571 INFO L175 Difference]: Start difference. First operand has 123 places, 148 transitions, 1386 flow. Second operand 6 states and 226 transitions. [2024-06-27 21:55:37,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 198 transitions, 1917 flow [2024-06-27 21:55:37,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 198 transitions, 1839 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 21:55:37,814 INFO L231 Difference]: Finished difference. Result has 123 places, 150 transitions, 1422 flow [2024-06-27 21:55:37,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1422, PETRI_PLACES=123, PETRI_TRANSITIONS=150} [2024-06-27 21:55:37,815 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 61 predicate places. [2024-06-27 21:55:37,815 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 150 transitions, 1422 flow [2024-06-27 21:55:37,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:37,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:37,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:37,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 21:55:37,816 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:37,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:37,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1270306579, now seen corresponding path program 6 times [2024-06-27 21:55:37,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:37,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920301245] [2024-06-27 21:55:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:37,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:38,078 INFO 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 21:55:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:38,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920301245] [2024-06-27 21:55:38,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920301245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:38,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:38,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:55:38,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918156450] [2024-06-27 21:55:38,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:38,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:55:38,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:38,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:55:38,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:55:38,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:38,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 150 transitions, 1422 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:38,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:38,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:38,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:39,765 INFO L124 PetriNetUnfolderBase]: 11337/16318 cut-off events. [2024-06-27 21:55:39,766 INFO L125 PetriNetUnfolderBase]: For 181118/181729 co-relation queries the response was YES. [2024-06-27 21:55:39,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76312 conditions, 16318 events. 11337/16318 cut-off events. For 181118/181729 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 102439 event pairs, 2746 based on Foata normal form. 227/16468 useless extension candidates. Maximal degree in co-relation 76262. Up to 14476 conditions per place. [2024-06-27 21:55:39,899 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 148 selfloop transitions, 37 changer transitions 0/203 dead transitions. [2024-06-27 21:55:39,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 203 transitions, 1953 flow [2024-06-27 21:55:39,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:55:39,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:55:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-06-27 21:55:39,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6815476190476191 [2024-06-27 21:55:39,900 INFO L175 Difference]: Start difference. First operand has 123 places, 150 transitions, 1422 flow. Second operand 6 states and 229 transitions. [2024-06-27 21:55:39,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 203 transitions, 1953 flow [2024-06-27 21:55:40,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 203 transitions, 1867 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 21:55:40,143 INFO L231 Difference]: Finished difference. Result has 126 places, 152 transitions, 1458 flow [2024-06-27 21:55:40,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1338, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1458, PETRI_PLACES=126, PETRI_TRANSITIONS=152} [2024-06-27 21:55:40,144 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 64 predicate places. [2024-06-27 21:55:40,144 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 152 transitions, 1458 flow [2024-06-27 21:55:40,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:40,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:40,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:40,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 21:55:40,145 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:40,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:40,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1276032031, now seen corresponding path program 1 times [2024-06-27 21:55:40,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:40,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390494829] [2024-06-27 21:55:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:40,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:40,405 INFO 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 21:55:40,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:40,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390494829] [2024-06-27 21:55:40,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390494829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:40,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:40,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:55:40,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225552528] [2024-06-27 21:55:40,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:40,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:55:40,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:40,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:55:40,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:55:40,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:40,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 152 transitions, 1458 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:40,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:40,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:40,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:42,813 INFO L124 PetriNetUnfolderBase]: 11087/15974 cut-off events. [2024-06-27 21:55:42,813 INFO L125 PetriNetUnfolderBase]: For 185436/186091 co-relation queries the response was YES. [2024-06-27 21:55:42,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74913 conditions, 15974 events. 11087/15974 cut-off events. For 185436/186091 co-relation queries the response was YES. Maximal size of possible extension queue 711. Compared 100034 event pairs, 3102 based on Foata normal form. 240/16149 useless extension candidates. Maximal degree in co-relation 74861. Up to 14195 conditions per place. [2024-06-27 21:55:42,921 INFO L140 encePairwiseOnDemand]: 45/56 looper letters, 168 selfloop transitions, 38 changer transitions 0/224 dead transitions. [2024-06-27 21:55:42,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 224 transitions, 2047 flow [2024-06-27 21:55:42,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 21:55:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 21:55:42,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 295 transitions. [2024-06-27 21:55:42,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6584821428571429 [2024-06-27 21:55:42,925 INFO L175 Difference]: Start difference. First operand has 126 places, 152 transitions, 1458 flow. Second operand 8 states and 295 transitions. [2024-06-27 21:55:42,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 224 transitions, 2047 flow [2024-06-27 21:55:43,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 224 transitions, 1906 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 21:55:43,238 INFO L231 Difference]: Finished difference. Result has 128 places, 153 transitions, 1392 flow [2024-06-27 21:55:43,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1392, PETRI_PLACES=128, PETRI_TRANSITIONS=153} [2024-06-27 21:55:43,239 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 66 predicate places. [2024-06-27 21:55:43,239 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 153 transitions, 1392 flow [2024-06-27 21:55:43,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 21:55:43,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:43,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:43,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 21:55:43,240 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:43,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:43,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1822596334, now seen corresponding path program 1 times [2024-06-27 21:55:43,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:43,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991013564] [2024-06-27 21:55:43,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:43,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:43,479 INFO 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 21:55:43,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:43,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991013564] [2024-06-27 21:55:43,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991013564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:43,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:43,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:55:43,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629643172] [2024-06-27 21:55:43,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:43,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:55:43,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:43,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:55:43,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:55:43,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:43,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 153 transitions, 1392 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 21:55:43,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:43,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:43,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:44,923 INFO L124 PetriNetUnfolderBase]: 9016/13068 cut-off events. [2024-06-27 21:55:44,924 INFO L125 PetriNetUnfolderBase]: For 162286/162797 co-relation queries the response was YES. [2024-06-27 21:55:44,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63393 conditions, 13068 events. 9016/13068 cut-off events. For 162286/162797 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 81369 event pairs, 2905 based on Foata normal form. 60/13093 useless extension candidates. Maximal degree in co-relation 63340. Up to 12186 conditions per place. [2024-06-27 21:55:45,020 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 139 selfloop transitions, 33 changer transitions 0/190 dead transitions. [2024-06-27 21:55:45,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 190 transitions, 1990 flow [2024-06-27 21:55:45,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:55:45,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:55:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-06-27 21:55:45,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-06-27 21:55:45,021 INFO L175 Difference]: Start difference. First operand has 128 places, 153 transitions, 1392 flow. Second operand 5 states and 182 transitions. [2024-06-27 21:55:45,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 190 transitions, 1990 flow [2024-06-27 21:55:45,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 190 transitions, 1901 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 21:55:45,222 INFO L231 Difference]: Finished difference. Result has 127 places, 161 transitions, 1486 flow [2024-06-27 21:55:45,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1486, PETRI_PLACES=127, PETRI_TRANSITIONS=161} [2024-06-27 21:55:45,222 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 65 predicate places. [2024-06-27 21:55:45,222 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 161 transitions, 1486 flow [2024-06-27 21:55:45,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 21:55:45,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:45,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:45,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 21:55:45,223 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:45,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:45,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1856879854, now seen corresponding path program 2 times [2024-06-27 21:55:45,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:45,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813431663] [2024-06-27 21:55:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:45,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:45,471 INFO 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 21:55:45,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:45,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813431663] [2024-06-27 21:55:45,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813431663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:45,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:45,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:55:45,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521468148] [2024-06-27 21:55:45,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:45,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:55:45,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:45,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:55:45,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:55:45,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:45,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 161 transitions, 1486 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 21:55:45,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:45,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:45,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:46,814 INFO L124 PetriNetUnfolderBase]: 9009/13059 cut-off events. [2024-06-27 21:55:46,815 INFO L125 PetriNetUnfolderBase]: For 181639/182210 co-relation queries the response was YES. [2024-06-27 21:55:46,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65627 conditions, 13059 events. 9009/13059 cut-off events. For 181639/182210 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 81268 event pairs, 2905 based on Foata normal form. 64/13089 useless extension candidates. Maximal degree in co-relation 65573. Up to 12192 conditions per place. [2024-06-27 21:55:46,917 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 135 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2024-06-27 21:55:46,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 1866 flow [2024-06-27 21:55:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 21:55:46,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 21:55:46,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-06-27 21:55:46,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6651785714285714 [2024-06-27 21:55:46,918 INFO L175 Difference]: Start difference. First operand has 127 places, 161 transitions, 1486 flow. Second operand 4 states and 149 transitions. [2024-06-27 21:55:46,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 1866 flow [2024-06-27 21:55:47,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 182 transitions, 1773 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-06-27 21:55:47,384 INFO L231 Difference]: Finished difference. Result has 130 places, 161 transitions, 1467 flow [2024-06-27 21:55:47,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1393, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1467, PETRI_PLACES=130, PETRI_TRANSITIONS=161} [2024-06-27 21:55:47,385 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 68 predicate places. [2024-06-27 21:55:47,385 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 161 transitions, 1467 flow [2024-06-27 21:55:47,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 21:55:47,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:47,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:47,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 21:55:47,385 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:47,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:47,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1542049830, now seen corresponding path program 1 times [2024-06-27 21:55:47,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:47,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527975301] [2024-06-27 21:55:47,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:47,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:47,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 21:55:47,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:47,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527975301] [2024-06-27 21:55:47,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527975301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:47,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:47,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 21:55:47,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410630282] [2024-06-27 21:55:47,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:47,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 21:55:47,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:47,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 21:55:47,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 21:55:47,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 56 [2024-06-27 21:55:47,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 161 transitions, 1467 flow. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 21:55:47,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:47,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 56 [2024-06-27 21:55:47,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:49,358 INFO L124 PetriNetUnfolderBase]: 9530/14213 cut-off events. [2024-06-27 21:55:49,358 INFO L125 PetriNetUnfolderBase]: For 182881/183012 co-relation queries the response was YES. [2024-06-27 21:55:49,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65935 conditions, 14213 events. 9530/14213 cut-off events. For 182881/183012 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 94003 event pairs, 4564 based on Foata normal form. 139/14248 useless extension candidates. Maximal degree in co-relation 65880. Up to 12775 conditions per place. [2024-06-27 21:55:49,457 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 151 selfloop transitions, 17 changer transitions 0/190 dead transitions. [2024-06-27 21:55:49,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 190 transitions, 1895 flow [2024-06-27 21:55:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:55:49,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:55:49,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-06-27 21:55:49,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6392857142857142 [2024-06-27 21:55:49,460 INFO L175 Difference]: Start difference. First operand has 130 places, 161 transitions, 1467 flow. Second operand 5 states and 179 transitions. [2024-06-27 21:55:49,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 190 transitions, 1895 flow [2024-06-27 21:55:49,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 190 transitions, 1837 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 21:55:49,628 INFO L231 Difference]: Finished difference. Result has 132 places, 164 transitions, 1483 flow [2024-06-27 21:55:49,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1483, PETRI_PLACES=132, PETRI_TRANSITIONS=164} [2024-06-27 21:55:49,629 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 70 predicate places. [2024-06-27 21:55:49,629 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 164 transitions, 1483 flow [2024-06-27 21:55:49,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 21:55:49,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:49,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:49,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 21:55:49,630 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:49,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:49,631 INFO L85 PathProgramCache]: Analyzing trace with hash 2074966350, now seen corresponding path program 1 times [2024-06-27 21:55:49,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:49,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353827003] [2024-06-27 21:55:49,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:49,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:49,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:49,890 INFO 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 21:55:49,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:49,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353827003] [2024-06-27 21:55:49,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353827003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:49,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:49,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:55:49,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123754227] [2024-06-27 21:55:49,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:49,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:55:49,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:49,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:55:49,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:55:49,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-06-27 21:55:49,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 164 transitions, 1483 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 21:55:49,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:49,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-06-27 21:55:49,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:51,971 INFO L124 PetriNetUnfolderBase]: 12199/17802 cut-off events. [2024-06-27 21:55:51,971 INFO L125 PetriNetUnfolderBase]: For 236232/236247 co-relation queries the response was YES. [2024-06-27 21:55:52,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83645 conditions, 17802 events. 12199/17802 cut-off events. For 236232/236247 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 115003 event pairs, 5355 based on Foata normal form. 10/17718 useless extension candidates. Maximal degree in co-relation 83588. Up to 16339 conditions per place. [2024-06-27 21:55:52,091 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 188 selfloop transitions, 26 changer transitions 0/228 dead transitions. [2024-06-27 21:55:52,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 228 transitions, 2309 flow [2024-06-27 21:55:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 21:55:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 21:55:52,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 208 transitions. [2024-06-27 21:55:52,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-06-27 21:55:52,093 INFO L175 Difference]: Start difference. First operand has 132 places, 164 transitions, 1483 flow. Second operand 6 states and 208 transitions. [2024-06-27 21:55:52,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 228 transitions, 2309 flow [2024-06-27 21:55:52,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 228 transitions, 2252 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 21:55:52,408 INFO L231 Difference]: Finished difference. Result has 138 places, 187 transitions, 1736 flow [2024-06-27 21:55:52,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1736, PETRI_PLACES=138, PETRI_TRANSITIONS=187} [2024-06-27 21:55:52,409 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 76 predicate places. [2024-06-27 21:55:52,409 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 187 transitions, 1736 flow [2024-06-27 21:55:52,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 21:55:52,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:52,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:52,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 21:55:52,410 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:52,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:52,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1151665306, now seen corresponding path program 2 times [2024-06-27 21:55:52,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:52,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440177720] [2024-06-27 21:55:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:52,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:52,666 INFO 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 21:55:52,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:52,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440177720] [2024-06-27 21:55:52,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440177720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:52,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:52,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:55:52,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121387837] [2024-06-27 21:55:52,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:52,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:55:52,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:52,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:55:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:55:52,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-06-27 21:55:52,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 187 transitions, 1736 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 21:55:52,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:52,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-06-27 21:55:52,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:54,692 INFO L124 PetriNetUnfolderBase]: 12223/17610 cut-off events. [2024-06-27 21:55:54,692 INFO L125 PetriNetUnfolderBase]: For 256582/256586 co-relation queries the response was YES. [2024-06-27 21:55:55,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86914 conditions, 17610 events. 12223/17610 cut-off events. For 256582/256586 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 111937 event pairs, 5360 based on Foata normal form. 6/17563 useless extension candidates. Maximal degree in co-relation 86853. Up to 16364 conditions per place. [2024-06-27 21:55:55,212 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 178 selfloop transitions, 30 changer transitions 0/222 dead transitions. [2024-06-27 21:55:55,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 222 transitions, 2380 flow [2024-06-27 21:55:55,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:55:55,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:55:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-06-27 21:55:55,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6178571428571429 [2024-06-27 21:55:55,216 INFO L175 Difference]: Start difference. First operand has 138 places, 187 transitions, 1736 flow. Second operand 5 states and 173 transitions. [2024-06-27 21:55:55,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 222 transitions, 2380 flow [2024-06-27 21:55:55,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 222 transitions, 2348 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-06-27 21:55:55,535 INFO L231 Difference]: Finished difference. Result has 144 places, 193 transitions, 1845 flow [2024-06-27 21:55:55,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1845, PETRI_PLACES=144, PETRI_TRANSITIONS=193} [2024-06-27 21:55:55,536 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 82 predicate places. [2024-06-27 21:55:55,536 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 193 transitions, 1845 flow [2024-06-27 21:55:55,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 21:55:55,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:55,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:55,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 21:55:55,537 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:55,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:55,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1151676466, now seen corresponding path program 3 times [2024-06-27 21:55:55,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:55,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566617157] [2024-06-27 21:55:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:55,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:55,789 INFO 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 21:55:55,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:55,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566617157] [2024-06-27 21:55:55,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566617157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:55,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:55,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 21:55:55,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554383065] [2024-06-27 21:55:55,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:55,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 21:55:55,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:55,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 21:55:55,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-06-27 21:55:55,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-06-27 21:55:55,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 193 transitions, 1845 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 21:55:55,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:55,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-06-27 21:55:55,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 21:55:57,731 INFO L124 PetriNetUnfolderBase]: 12216/17831 cut-off events. [2024-06-27 21:55:57,731 INFO L125 PetriNetUnfolderBase]: For 272096/272122 co-relation queries the response was YES. [2024-06-27 21:55:57,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87992 conditions, 17831 events. 12216/17831 cut-off events. For 272096/272122 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 115141 event pairs, 5355 based on Foata normal form. 18/17755 useless extension candidates. Maximal degree in co-relation 87927. Up to 16357 conditions per place. [2024-06-27 21:55:57,886 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 180 selfloop transitions, 31 changer transitions 0/225 dead transitions. [2024-06-27 21:55:57,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 225 transitions, 2349 flow [2024-06-27 21:55:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 21:55:57,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 21:55:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-06-27 21:55:57,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6321428571428571 [2024-06-27 21:55:57,888 INFO L175 Difference]: Start difference. First operand has 144 places, 193 transitions, 1845 flow. Second operand 5 states and 177 transitions. [2024-06-27 21:55:57,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 225 transitions, 2349 flow [2024-06-27 21:55:58,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 225 transitions, 2289 flow, removed 17 selfloop flow, removed 1 redundant places. [2024-06-27 21:55:58,630 INFO L231 Difference]: Finished difference. Result has 148 places, 193 transitions, 1861 flow [2024-06-27 21:55:58,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1861, PETRI_PLACES=148, PETRI_TRANSITIONS=193} [2024-06-27 21:55:58,630 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 86 predicate places. [2024-06-27 21:55:58,630 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 193 transitions, 1861 flow [2024-06-27 21:55:58,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 0 states have call successors, (0), 0 states 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 21:55:58,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 21:55:58,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 21:55:58,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 21:55:58,631 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 21:55:58,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 21:55:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash 492757468, now seen corresponding path program 1 times [2024-06-27 21:55:58,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 21:55:58,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509222141] [2024-06-27 21:55:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 21:55:58,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 21:55:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 21:55:58,842 INFO 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 21:55:58,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 21:55:58,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509222141] [2024-06-27 21:55:58,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509222141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 21:55:58,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 21:55:58,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 21:55:58,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123053308] [2024-06-27 21:55:58,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 21:55:58,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 21:55:58,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 21:55:58,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 21:55:58,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-06-27 21:55:58,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 56 [2024-06-27 21:55:58,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 193 transitions, 1861 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 21:55:58,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 21:55:58,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 56 [2024-06-27 21:55:58,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand