./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix040_tso.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix040_tso.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/mix040_tso.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix040_tso.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-eb4cb34-m [2024-06-21 19:01:15,186 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 19:01:15,252 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 19:01:15,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 19:01:15,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 19:01:15,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 19:01:15,283 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 19:01:15,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 19:01:15,284 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 19:01:15,287 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 19:01:15,287 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 19:01:15,287 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 19:01:15,288 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 19:01:15,289 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 19:01:15,289 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 19:01:15,290 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 19:01:15,290 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 19:01:15,290 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 19:01:15,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 19:01:15,290 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 19:01:15,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 19:01:15,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 19:01:15,291 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 19:01:15,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 19:01:15,292 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 19:01:15,292 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 19:01:15,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 19:01:15,292 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 19:01:15,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 19:01:15,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 19:01:15,294 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 19:01:15,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 19:01:15,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:01:15,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 19:01:15,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 19:01:15,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 19:01:15,295 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 19:01:15,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 19:01:15,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 19:01:15,295 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 19:01:15,296 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 19:01:15,296 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 19:01:15,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 19:01:15,296 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 19:01:15,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 19:01:15,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 19:01:15,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 19:01:15,530 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 19:01:15,530 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 19:01:15,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/mix040_tso.oepc.yml/witness.yml [2024-06-21 19:01:15,645 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 19:01:15,646 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 19:01:15,646 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix040_tso.oepc.i [2024-06-21 19:01:16,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 19:01:16,863 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 19:01:16,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix040_tso.oepc.i [2024-06-21 19:01:16,875 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8abdb86c0/8f56abeff17e433f934a0827fb5dc9f5/FLAG30213060a [2024-06-21 19:01:16,887 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8abdb86c0/8f56abeff17e433f934a0827fb5dc9f5 [2024-06-21 19:01:16,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 19:01:16,889 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 19:01:16,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 19:01:16,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 19:01:16,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 19:01:16,895 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:01:15" (1/2) ... [2024-06-21 19:01:16,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4833c194 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:01:16, skipping insertion in model container [2024-06-21 19:01:16,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:01:15" (1/2) ... [2024-06-21 19:01:16,898 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a463148 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 07:01:16, skipping insertion in model container [2024-06-21 19:01:16,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:01:16" (2/2) ... [2024-06-21 19:01:16,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4833c194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:16, skipping insertion in model container [2024-06-21 19:01:16,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 07:01:16" (2/2) ... [2024-06-21 19:01:16,900 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 19:01:16,925 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 19:01:16,926 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )b >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-21 19:01:16,926 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )b >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-21 19:01:16,926 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )b >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-21 19:01:16,926 INFO L97 edCorrectnessWitness]: Location invariant before [L854-L854] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )__unbuffered_p2_EAX) + (long long )z >= 0LL && (0LL - (long long )__unbuffered_p3_EAX) + (long long )a >= 0LL) && (0LL - (long long )__unbuffered_p3_EBX) + (long long )b >= 0LL) && (0LL - (long long )y$r_buff0_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd3) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )a >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )main$tmp_guard1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )x >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$mem_tmp >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd3 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$read_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff0_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )y$w_buff1_used >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )z >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) + (long long )weak$$choice2 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p2_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL + (long long )__unbuffered_p3_EAX) - (long long )__unbuffered_p3_EBX >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$flush_delayed >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff0_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd0 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd1 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd2 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$r_buff1_thd4 >= 0LL) && (1LL - (long long )__unbuffered_p3_EBX) - (long long )y$read_delayed >= 0LL) && (2LL - (long long )__unbuffered_p3_EBX) - (long long )b >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$r_buff1_thd3 >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff0_used >= 0LL) && (long long )y$r_buff0_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$r_buff1_thd3 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff0_used >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff0_used - (long long )y$w_buff1_used >= 0LL) && (long long )y$w_buff1 - (long long )y$w_buff1_used >= 0LL) [2024-06-21 19:01:16,926 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 19:01:16,927 INFO L106 edCorrectnessWitness]: ghost_update [L852-L852] multithreaded = 1; [2024-06-21 19:01:16,961 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 19:01:17,317 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:01:17,327 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 19:01:17,498 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 19:01:17,539 INFO L206 MainTranslator]: Completed translation [2024-06-21 19:01:17,540 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17 WrapperNode [2024-06-21 19:01:17,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 19:01:17,540 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 19:01:17,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 19:01:17,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 19:01:17,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,613 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 158 [2024-06-21 19:01:17,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 19:01:17,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 19:01:17,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 19:01:17,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 19:01:17,624 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,624 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,657 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,692 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]. [2024-06-21 19:01:17,692 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,702 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 19:01:17,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 19:01:17,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 19:01:17,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 19:01:17,723 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (1/1) ... [2024-06-21 19:01:17,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 19:01:17,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 19:01:17,757 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) [2024-06-21 19:01:17,766 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 [2024-06-21 19:01:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 19:01:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 19:01:17,800 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 19:01:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 19:01:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 19:01:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 19:01:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-21 19:01:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-21 19:01:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-21 19:01:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-21 19:01:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 19:01:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 19:01:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 19:01:17,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 19:01:17,804 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 19:01:17,926 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 19:01:17,928 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 19:01:18,324 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 19:01:18,324 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 19:01:18,549 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 19:01:18,550 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 19:01:18,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:01:18 BoogieIcfgContainer [2024-06-21 19:01:18,550 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 19:01:18,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 19:01:18,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 19:01:18,554 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 19:01:18,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 07:01:15" (1/4) ... [2024-06-21 19:01:18,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a29cfc9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 07:01:18, skipping insertion in model container [2024-06-21 19:01:18,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 07:01:16" (2/4) ... [2024-06-21 19:01:18,556 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a29cfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:01:18, skipping insertion in model container [2024-06-21 19:01:18,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 07:01:17" (3/4) ... [2024-06-21 19:01:18,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a29cfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 07:01:18, skipping insertion in model container [2024-06-21 19:01:18,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 07:01:18" (4/4) ... [2024-06-21 19:01:18,558 INFO L112 eAbstractionObserver]: Analyzing ICFG mix040_tso.oepc.i [2024-06-21 19:01:18,570 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 19:01:18,570 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-21 19:01:18,570 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 19:01:18,618 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 19:01:18,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 19:01:18,676 INFO L124 PetriNetUnfolderBase]: 0/49 cut-off events. [2024-06-21 19:01:18,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:01:18,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 49 events. 0/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 19:01:18,679 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 53 transitions, 122 flow [2024-06-21 19:01:18,682 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 43 transitions, 98 flow [2024-06-21 19:01:18,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 19:01:18,693 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;@4affaf54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 19:01:18,693 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-21 19:01:18,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 19:01:18,695 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 19:01:18,696 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 19:01:18,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:18,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 19:01:18,696 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:18,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash 395644132, now seen corresponding path program 1 times [2024-06-21 19:01:18,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:18,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613308609] [2024-06-21 19:01:18,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:18,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:19,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:19,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613308609] [2024-06-21 19:01:19,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613308609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:19,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:19,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 19:01:19,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349843389] [2024-06-21 19:01:19,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:19,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 19:01:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:19,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 19:01:19,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 19:01:19,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 53 [2024-06-21 19:01:19,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:19,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:19,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 53 [2024-06-21 19:01:19,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:21,457 INFO L124 PetriNetUnfolderBase]: 9583/13641 cut-off events. [2024-06-21 19:01:21,457 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-06-21 19:01:21,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27039 conditions, 13641 events. 9583/13641 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 77548 event pairs, 7347 based on Foata normal form. 1/13246 useless extension candidates. Maximal degree in co-relation 27026. Up to 13009 conditions per place. [2024-06-21 19:01:21,539 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 43 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2024-06-21 19:01:21,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 57 transitions, 231 flow [2024-06-21 19:01:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 19:01:21,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 19:01:21,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-21 19:01:21,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.610062893081761 [2024-06-21 19:01:21,550 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 98 flow. Second operand 3 states and 97 transitions. [2024-06-21 19:01:21,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 57 transitions, 231 flow [2024-06-21 19:01:21,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 19:01:21,555 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 133 flow [2024-06-21 19:01:21,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-06-21 19:01:21,559 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -1 predicate places. [2024-06-21 19:01:21,559 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 133 flow [2024-06-21 19:01:21,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:21,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:21,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:21,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 19:01:21,560 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:21,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:21,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2038056701, now seen corresponding path program 1 times [2024-06-21 19:01:21,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:21,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013110753] [2024-06-21 19:01:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:21,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:21,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:22,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:22,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013110753] [2024-06-21 19:01:22,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013110753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:22,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:22,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 19:01:22,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137510287] [2024-06-21 19:01:22,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:22,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 19:01:22,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:22,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 19:01:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 19:01:22,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 19:01:22,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:22,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:22,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 19:01:22,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:24,096 INFO L124 PetriNetUnfolderBase]: 10968/15232 cut-off events. [2024-06-21 19:01:24,096 INFO L125 PetriNetUnfolderBase]: For 2797/2797 co-relation queries the response was YES. [2024-06-21 19:01:24,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34320 conditions, 15232 events. 10968/15232 cut-off events. For 2797/2797 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 83832 event pairs, 7575 based on Foata normal form. 4/15053 useless extension candidates. Maximal degree in co-relation 34308. Up to 14819 conditions per place. [2024-06-21 19:01:24,176 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 54 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-21 19:01:24,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 325 flow [2024-06-21 19:01:24,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 19:01:24,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 19:01:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 123 transitions. [2024-06-21 19:01:24,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801886792452831 [2024-06-21 19:01:24,178 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 133 flow. Second operand 4 states and 123 transitions. [2024-06-21 19:01:24,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 325 flow [2024-06-21 19:01:24,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 320 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 19:01:24,180 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 181 flow [2024-06-21 19:01:24,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2024-06-21 19:01:24,181 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2024-06-21 19:01:24,181 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 181 flow [2024-06-21 19:01:24,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:24,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:24,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:24,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 19:01:24,182 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:24,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1244752451, now seen corresponding path program 1 times [2024-06-21 19:01:24,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:24,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658355837] [2024-06-21 19:01:24,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:24,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:25,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:25,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658355837] [2024-06-21 19:01:25,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658355837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:25,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:25,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:01:25,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722708480] [2024-06-21 19:01:25,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:25,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:01:25,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:25,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:01:25,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:01:25,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 19:01:25,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:25,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:25,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 19:01:25,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:26,774 INFO L124 PetriNetUnfolderBase]: 10986/15292 cut-off events. [2024-06-21 19:01:26,775 INFO L125 PetriNetUnfolderBase]: For 8172/8172 co-relation queries the response was YES. [2024-06-21 19:01:26,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38256 conditions, 15292 events. 10986/15292 cut-off events. For 8172/8172 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 84516 event pairs, 6069 based on Foata normal form. 7/15130 useless extension candidates. Maximal degree in co-relation 38242. Up to 14740 conditions per place. [2024-06-21 19:01:26,849 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 72 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-21 19:01:26,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 101 transitions, 541 flow [2024-06-21 19:01:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:01:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:01:26,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-06-21 19:01:26,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6075471698113207 [2024-06-21 19:01:26,854 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 181 flow. Second operand 5 states and 161 transitions. [2024-06-21 19:01:26,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 101 transitions, 541 flow [2024-06-21 19:01:26,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 101 transitions, 522 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-21 19:01:26,859 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 312 flow [2024-06-21 19:01:26,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=312, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2024-06-21 19:01:26,860 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-06-21 19:01:26,860 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 312 flow [2024-06-21 19:01:26,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:26,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:26,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:26,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 19:01:26,861 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:26,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1230465522, now seen corresponding path program 1 times [2024-06-21 19:01:26,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:26,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079631903] [2024-06-21 19:01:26,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:26,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:27,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:27,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079631903] [2024-06-21 19:01:27,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079631903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:27,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:27,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:01:27,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635254511] [2024-06-21 19:01:27,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:27,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:01:27,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:27,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:01:27,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:01:27,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-06-21 19:01:27,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:27,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:27,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-06-21 19:01:27,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:29,686 INFO L124 PetriNetUnfolderBase]: 11015/15336 cut-off events. [2024-06-21 19:01:29,687 INFO L125 PetriNetUnfolderBase]: For 19464/19469 co-relation queries the response was YES. [2024-06-21 19:01:29,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44543 conditions, 15336 events. 11015/15336 cut-off events. For 19464/19469 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 84839 event pairs, 5024 based on Foata normal form. 18/15185 useless extension candidates. Maximal degree in co-relation 44526. Up to 14705 conditions per place. [2024-06-21 19:01:29,814 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 79 selfloop transitions, 25 changer transitions 0/112 dead transitions. [2024-06-21 19:01:29,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 686 flow [2024-06-21 19:01:29,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:01:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:01:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-06-21 19:01:29,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2024-06-21 19:01:29,816 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 312 flow. Second operand 6 states and 186 transitions. [2024-06-21 19:01:29,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 686 flow [2024-06-21 19:01:29,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 112 transitions, 674 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-21 19:01:29,824 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 389 flow [2024-06-21 19:01:29,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=389, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-21 19:01:29,826 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2024-06-21 19:01:29,826 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 389 flow [2024-06-21 19:01:29,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:29,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:29,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:29,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 19:01:29,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:29,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:29,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2001321598, now seen corresponding path program 1 times [2024-06-21 19:01:29,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:29,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327085271] [2024-06-21 19:01:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:29,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:30,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:30,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327085271] [2024-06-21 19:01:30,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327085271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:30,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:30,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:01:30,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403864291] [2024-06-21 19:01:30,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:30,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:01:30,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:01:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:01:30,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:01:30,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 389 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:30,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:30,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:01:30,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:32,649 INFO L124 PetriNetUnfolderBase]: 9611/13707 cut-off events. [2024-06-21 19:01:32,649 INFO L125 PetriNetUnfolderBase]: For 25303/25303 co-relation queries the response was YES. [2024-06-21 19:01:32,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42974 conditions, 13707 events. 9611/13707 cut-off events. For 25303/25303 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 78203 event pairs, 5145 based on Foata normal form. 3/13505 useless extension candidates. Maximal degree in co-relation 42953. Up to 13036 conditions per place. [2024-06-21 19:01:32,770 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 66 selfloop transitions, 12 changer transitions 0/86 dead transitions. [2024-06-21 19:01:32,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 601 flow [2024-06-21 19:01:32,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:01:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:01:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-06-21 19:01:32,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830188679245283 [2024-06-21 19:01:32,773 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 389 flow. Second operand 5 states and 128 transitions. [2024-06-21 19:01:32,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 601 flow [2024-06-21 19:01:32,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 86 transitions, 530 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-21 19:01:32,781 INFO L231 Difference]: Finished difference. Result has 70 places, 70 transitions, 374 flow [2024-06-21 19:01:32,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=70, PETRI_TRANSITIONS=70} [2024-06-21 19:01:32,787 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2024-06-21 19:01:32,788 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 70 transitions, 374 flow [2024-06-21 19:01:32,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:32,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:32,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:32,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 19:01:32,788 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:32,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:32,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1860658542, now seen corresponding path program 1 times [2024-06-21 19:01:32,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:32,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092312529] [2024-06-21 19:01:32,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:32,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:34,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:34,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:34,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092312529] [2024-06-21 19:01:34,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092312529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:34,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:34,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:01:34,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277088643] [2024-06-21 19:01:34,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:34,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:01:34,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:34,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:01:34,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:01:34,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:01:34,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 374 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:34,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:34,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:01:34,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:35,543 INFO L124 PetriNetUnfolderBase]: 9593/13721 cut-off events. [2024-06-21 19:01:35,544 INFO L125 PetriNetUnfolderBase]: For 29356/29356 co-relation queries the response was YES. [2024-06-21 19:01:35,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43634 conditions, 13721 events. 9593/13721 cut-off events. For 29356/29356 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 78381 event pairs, 4885 based on Foata normal form. 6/13516 useless extension candidates. Maximal degree in co-relation 43609. Up to 12982 conditions per place. [2024-06-21 19:01:35,624 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 74 selfloop transitions, 16 changer transitions 0/98 dead transitions. [2024-06-21 19:01:35,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 98 transitions, 644 flow [2024-06-21 19:01:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:01:35,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:01:35,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 153 transitions. [2024-06-21 19:01:35,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811320754716981 [2024-06-21 19:01:35,628 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 374 flow. Second operand 6 states and 153 transitions. [2024-06-21 19:01:35,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 98 transitions, 644 flow [2024-06-21 19:01:35,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 98 transitions, 620 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-21 19:01:35,637 INFO L231 Difference]: Finished difference. Result has 73 places, 74 transitions, 431 flow [2024-06-21 19:01:35,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=431, PETRI_PLACES=73, PETRI_TRANSITIONS=74} [2024-06-21 19:01:35,638 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 17 predicate places. [2024-06-21 19:01:35,638 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 74 transitions, 431 flow [2024-06-21 19:01:35,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:35,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:35,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:35,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 19:01:35,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:35,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:35,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1840118907, now seen corresponding path program 1 times [2024-06-21 19:01:35,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:35,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868350892] [2024-06-21 19:01:35,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:35,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:36,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:36,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868350892] [2024-06-21 19:01:36,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868350892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:36,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:36,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:01:36,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080402979] [2024-06-21 19:01:36,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:36,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:01:36,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:01:36,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:01:36,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:01:36,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 74 transitions, 431 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:36,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:36,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:01:36,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:38,637 INFO L124 PetriNetUnfolderBase]: 11137/15550 cut-off events. [2024-06-21 19:01:38,637 INFO L125 PetriNetUnfolderBase]: For 46503/46513 co-relation queries the response was YES. [2024-06-21 19:01:38,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53737 conditions, 15550 events. 11137/15550 cut-off events. For 46503/46513 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 85778 event pairs, 6078 based on Foata normal form. 14/15374 useless extension candidates. Maximal degree in co-relation 53710. Up to 14867 conditions per place. [2024-06-21 19:01:38,744 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 80 selfloop transitions, 38 changer transitions 0/125 dead transitions. [2024-06-21 19:01:38,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 125 transitions, 955 flow [2024-06-21 19:01:38,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:01:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:01:38,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-06-21 19:01:38,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-21 19:01:38,746 INFO L175 Difference]: Start difference. First operand has 73 places, 74 transitions, 431 flow. Second operand 6 states and 162 transitions. [2024-06-21 19:01:38,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 125 transitions, 955 flow [2024-06-21 19:01:38,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 125 transitions, 914 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-21 19:01:38,762 INFO L231 Difference]: Finished difference. Result has 77 places, 92 transitions, 623 flow [2024-06-21 19:01:38,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=77, PETRI_TRANSITIONS=92} [2024-06-21 19:01:38,763 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2024-06-21 19:01:38,763 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 92 transitions, 623 flow [2024-06-21 19:01:38,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:38,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:38,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:38,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 19:01:38,764 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:38,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:38,764 INFO L85 PathProgramCache]: Analyzing trace with hash -873863269, now seen corresponding path program 2 times [2024-06-21 19:01:38,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:38,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682666827] [2024-06-21 19:01:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:38,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:39,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:39,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682666827] [2024-06-21 19:01:39,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682666827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:39,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:39,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:01:39,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536638183] [2024-06-21 19:01:39,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:39,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:01:39,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:39,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:01:39,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:01:40,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:01:40,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 92 transitions, 623 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:40,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:40,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:01:40,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:42,018 INFO L124 PetriNetUnfolderBase]: 11122/15511 cut-off events. [2024-06-21 19:01:42,020 INFO L125 PetriNetUnfolderBase]: For 54550/54552 co-relation queries the response was YES. [2024-06-21 19:01:42,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55138 conditions, 15511 events. 11122/15511 cut-off events. For 54550/54552 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 85310 event pairs, 6080 based on Foata normal form. 5/15322 useless extension candidates. Maximal degree in co-relation 55107. Up to 14852 conditions per place. [2024-06-21 19:01:42,098 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 71 selfloop transitions, 42 changer transitions 0/120 dead transitions. [2024-06-21 19:01:42,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 120 transitions, 975 flow [2024-06-21 19:01:42,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:01:42,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:01:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-06-21 19:01:42,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4937106918238994 [2024-06-21 19:01:42,099 INFO L175 Difference]: Start difference. First operand has 77 places, 92 transitions, 623 flow. Second operand 6 states and 157 transitions. [2024-06-21 19:01:42,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 120 transitions, 975 flow [2024-06-21 19:01:42,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 120 transitions, 933 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-21 19:01:42,113 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 688 flow [2024-06-21 19:01:42,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2024-06-21 19:01:42,114 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 26 predicate places. [2024-06-21 19:01:42,114 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 688 flow [2024-06-21 19:01:42,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:42,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:42,114 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:42,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 19:01:42,115 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:42,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:42,115 INFO L85 PathProgramCache]: Analyzing trace with hash 65140859, now seen corresponding path program 3 times [2024-06-21 19:01:42,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:42,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931712843] [2024-06-21 19:01:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:42,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:43,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:43,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:43,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931712843] [2024-06-21 19:01:43,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931712843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:43,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:43,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:01:43,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258679422] [2024-06-21 19:01:43,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:43,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:01:43,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:43,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:01:43,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:01:43,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:01:43,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:43,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:43,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:01:43,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:44,976 INFO L124 PetriNetUnfolderBase]: 11233/15668 cut-off events. [2024-06-21 19:01:44,976 INFO L125 PetriNetUnfolderBase]: For 64757/64769 co-relation queries the response was YES. [2024-06-21 19:01:45,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57288 conditions, 15668 events. 11233/15668 cut-off events. For 64757/64769 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 86150 event pairs, 6050 based on Foata normal form. 16/15500 useless extension candidates. Maximal degree in co-relation 57253. Up to 14929 conditions per place. [2024-06-21 19:01:45,075 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 82 selfloop transitions, 60 changer transitions 0/149 dead transitions. [2024-06-21 19:01:45,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 149 transitions, 1301 flow [2024-06-21 19:01:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:01:45,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:01:45,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2024-06-21 19:01:45,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48247978436657685 [2024-06-21 19:01:45,077 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 688 flow. Second operand 7 states and 179 transitions. [2024-06-21 19:01:45,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 149 transitions, 1301 flow [2024-06-21 19:01:45,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 149 transitions, 1216 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-21 19:01:45,114 INFO L231 Difference]: Finished difference. Result has 89 places, 115 transitions, 1015 flow [2024-06-21 19:01:45,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1015, PETRI_PLACES=89, PETRI_TRANSITIONS=115} [2024-06-21 19:01:45,115 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 33 predicate places. [2024-06-21 19:01:45,115 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 115 transitions, 1015 flow [2024-06-21 19:01:45,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:45,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:45,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:45,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 19:01:45,115 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:45,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:45,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1209112047, now seen corresponding path program 1 times [2024-06-21 19:01:45,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:45,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212277067] [2024-06-21 19:01:45,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:45,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:46,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:46,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212277067] [2024-06-21 19:01:46,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212277067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:46,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:46,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:01:46,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800745120] [2024-06-21 19:01:46,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:46,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:01:46,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:46,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:01:46,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:01:46,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:01:46,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 115 transitions, 1015 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:46,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:46,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:01:46,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:48,598 INFO L124 PetriNetUnfolderBase]: 11445/15925 cut-off events. [2024-06-21 19:01:48,598 INFO L125 PetriNetUnfolderBase]: For 78559/78569 co-relation queries the response was YES. [2024-06-21 19:01:48,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60235 conditions, 15925 events. 11445/15925 cut-off events. For 78559/78569 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 87173 event pairs, 4676 based on Foata normal form. 17/15760 useless extension candidates. Maximal degree in co-relation 60196. Up to 14851 conditions per place. [2024-06-21 19:01:48,711 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 98 selfloop transitions, 68 changer transitions 0/173 dead transitions. [2024-06-21 19:01:48,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 173 transitions, 1709 flow [2024-06-21 19:01:48,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:01:48,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:01:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-21 19:01:48,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148247978436657 [2024-06-21 19:01:48,713 INFO L175 Difference]: Start difference. First operand has 89 places, 115 transitions, 1015 flow. Second operand 7 states and 191 transitions. [2024-06-21 19:01:48,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 173 transitions, 1709 flow [2024-06-21 19:01:48,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 173 transitions, 1646 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-21 19:01:48,767 INFO L231 Difference]: Finished difference. Result has 92 places, 128 transitions, 1216 flow [2024-06-21 19:01:48,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1216, PETRI_PLACES=92, PETRI_TRANSITIONS=128} [2024-06-21 19:01:48,768 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 36 predicate places. [2024-06-21 19:01:48,769 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 128 transitions, 1216 flow [2024-06-21 19:01:48,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:48,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:48,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:48,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 19:01:48,769 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:48,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:48,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1363512405, now seen corresponding path program 2 times [2024-06-21 19:01:48,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:48,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804122086] [2024-06-21 19:01:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:48,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:50,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:50,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804122086] [2024-06-21 19:01:50,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804122086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:50,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:50,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:01:50,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949014349] [2024-06-21 19:01:50,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:50,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:01:50,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:50,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:01:50,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:01:50,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:01:50,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 128 transitions, 1216 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:50,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:50,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:01:50,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:52,422 INFO L124 PetriNetUnfolderBase]: 11551/16049 cut-off events. [2024-06-21 19:01:52,423 INFO L125 PetriNetUnfolderBase]: For 100357/100359 co-relation queries the response was YES. [2024-06-21 19:01:52,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65671 conditions, 16049 events. 11551/16049 cut-off events. For 100357/100359 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 87664 event pairs, 4661 based on Foata normal form. 8/15863 useless extension candidates. Maximal degree in co-relation 65631. Up to 14926 conditions per place. [2024-06-21 19:01:52,526 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 88 selfloop transitions, 87 changer transitions 0/182 dead transitions. [2024-06-21 19:01:52,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 182 transitions, 1942 flow [2024-06-21 19:01:52,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:01:52,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:01:52,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-06-21 19:01:52,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-21 19:01:52,527 INFO L175 Difference]: Start difference. First operand has 92 places, 128 transitions, 1216 flow. Second operand 7 states and 189 transitions. [2024-06-21 19:01:52,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 182 transitions, 1942 flow [2024-06-21 19:01:52,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 182 transitions, 1876 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-21 19:01:52,582 INFO L231 Difference]: Finished difference. Result has 96 places, 140 transitions, 1463 flow [2024-06-21 19:01:52,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1463, PETRI_PLACES=96, PETRI_TRANSITIONS=140} [2024-06-21 19:01:52,583 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 40 predicate places. [2024-06-21 19:01:52,583 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 140 transitions, 1463 flow [2024-06-21 19:01:52,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:52,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:52,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:52,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 19:01:52,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:52,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:52,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1386243567, now seen corresponding path program 3 times [2024-06-21 19:01:52,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:52,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948824316] [2024-06-21 19:01:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:52,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:53,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:53,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948824316] [2024-06-21 19:01:53,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948824316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:53,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:53,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:01:53,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338362785] [2024-06-21 19:01:53,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:53,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:01:53,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:53,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:01:53,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:01:53,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:01:53,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 140 transitions, 1463 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:53,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:53,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:01:53,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:56,087 INFO L124 PetriNetUnfolderBase]: 11533/16025 cut-off events. [2024-06-21 19:01:56,087 INFO L125 PetriNetUnfolderBase]: For 117342/117344 co-relation queries the response was YES. [2024-06-21 19:01:56,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68118 conditions, 16025 events. 11533/16025 cut-off events. For 117342/117344 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 87534 event pairs, 4658 based on Foata normal form. 8/15839 useless extension candidates. Maximal degree in co-relation 68075. Up to 14917 conditions per place. [2024-06-21 19:01:56,181 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 95 selfloop transitions, 84 changer transitions 0/186 dead transitions. [2024-06-21 19:01:56,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 186 transitions, 2109 flow [2024-06-21 19:01:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:01:56,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:01:56,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-21 19:01:56,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121293800539084 [2024-06-21 19:01:56,183 INFO L175 Difference]: Start difference. First operand has 96 places, 140 transitions, 1463 flow. Second operand 7 states and 190 transitions. [2024-06-21 19:01:56,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 186 transitions, 2109 flow [2024-06-21 19:01:56,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 186 transitions, 2025 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-21 19:01:56,256 INFO L231 Difference]: Finished difference. Result has 101 places, 141 transitions, 1572 flow [2024-06-21 19:01:56,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1572, PETRI_PLACES=101, PETRI_TRANSITIONS=141} [2024-06-21 19:01:56,257 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 45 predicate places. [2024-06-21 19:01:56,257 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 141 transitions, 1572 flow [2024-06-21 19:01:56,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:56,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:56,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:56,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 19:01:56,258 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:56,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:56,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2019367407, now seen corresponding path program 4 times [2024-06-21 19:01:56,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:56,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287707278] [2024-06-21 19:01:56,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:56,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:01:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:01:57,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:01:57,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287707278] [2024-06-21 19:01:57,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287707278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:01:57,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:01:57,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:01:57,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194863840] [2024-06-21 19:01:57,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:01:57,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:01:57,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:01:57,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:01:57,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:01:57,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:01:57,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 141 transitions, 1572 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:57,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:01:57,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:01:57,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:01:59,602 INFO L124 PetriNetUnfolderBase]: 11763/16342 cut-off events. [2024-06-21 19:01:59,603 INFO L125 PetriNetUnfolderBase]: For 133275/133287 co-relation queries the response was YES. [2024-06-21 19:01:59,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70609 conditions, 16342 events. 11763/16342 cut-off events. For 133275/133287 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 89286 event pairs, 4654 based on Foata normal form. 19/16185 useless extension candidates. Maximal degree in co-relation 70563. Up to 15081 conditions per place. [2024-06-21 19:01:59,725 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 109 selfloop transitions, 100 changer transitions 0/216 dead transitions. [2024-06-21 19:01:59,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 216 transitions, 2590 flow [2024-06-21 19:01:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:01:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:01:59,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 216 transitions. [2024-06-21 19:01:59,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5094339622641509 [2024-06-21 19:01:59,726 INFO L175 Difference]: Start difference. First operand has 101 places, 141 transitions, 1572 flow. Second operand 8 states and 216 transitions. [2024-06-21 19:01:59,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 216 transitions, 2590 flow [2024-06-21 19:01:59,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 216 transitions, 2366 flow, removed 44 selfloop flow, removed 3 redundant places. [2024-06-21 19:01:59,873 INFO L231 Difference]: Finished difference. Result has 107 places, 162 transitions, 1868 flow [2024-06-21 19:01:59,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1868, PETRI_PLACES=107, PETRI_TRANSITIONS=162} [2024-06-21 19:01:59,875 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 51 predicate places. [2024-06-21 19:01:59,875 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 162 transitions, 1868 flow [2024-06-21 19:01:59,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:01:59,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:01:59,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:01:59,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 19:01:59,876 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:01:59,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:01:59,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1363503477, now seen corresponding path program 1 times [2024-06-21 19:01:59,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:01:59,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715133307] [2024-06-21 19:01:59,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:01:59,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:01:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:01,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:01,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715133307] [2024-06-21 19:02:01,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715133307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:01,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:01,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:01,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698702712] [2024-06-21 19:02:01,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:01,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:01,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:01,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:01,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:02,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 53 [2024-06-21 19:02:02,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 162 transitions, 1868 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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) [2024-06-21 19:02:02,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:02,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 53 [2024-06-21 19:02:02,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:03,963 INFO L124 PetriNetUnfolderBase]: 10353/14641 cut-off events. [2024-06-21 19:02:03,964 INFO L125 PetriNetUnfolderBase]: For 131140/131142 co-relation queries the response was YES. [2024-06-21 19:02:04,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64519 conditions, 14641 events. 10353/14641 cut-off events. For 131140/131142 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 82331 event pairs, 4373 based on Foata normal form. 6/14492 useless extension candidates. Maximal degree in co-relation 64470. Up to 13973 conditions per place. [2024-06-21 19:02:04,074 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 170 selfloop transitions, 19 changer transitions 0/197 dead transitions. [2024-06-21 19:02:04,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 197 transitions, 2396 flow [2024-06-21 19:02:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-21 19:02:04,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481132075471698 [2024-06-21 19:02:04,075 INFO L175 Difference]: Start difference. First operand has 107 places, 162 transitions, 1868 flow. Second operand 8 states and 190 transitions. [2024-06-21 19:02:04,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 197 transitions, 2396 flow [2024-06-21 19:02:04,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 197 transitions, 2268 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-21 19:02:04,208 INFO L231 Difference]: Finished difference. Result has 112 places, 165 transitions, 1846 flow [2024-06-21 19:02:04,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1846, PETRI_PLACES=112, PETRI_TRANSITIONS=165} [2024-06-21 19:02:04,209 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 56 predicate places. [2024-06-21 19:02:04,209 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 165 transitions, 1846 flow [2024-06-21 19:02:04,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 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) [2024-06-21 19:02:04,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:04,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:04,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 19:02:04,209 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:04,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:04,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1152037408, now seen corresponding path program 1 times [2024-06-21 19:02:04,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:04,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900282087] [2024-06-21 19:02:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:04,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:05,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:05,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:05,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900282087] [2024-06-21 19:02:05,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900282087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:05,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:05,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-21 19:02:05,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821513723] [2024-06-21 19:02:05,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:05,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-21 19:02:05,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:05,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-21 19:02:05,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-21 19:02:05,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:05,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 165 transitions, 1846 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:05,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:05,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:05,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:06,919 INFO L124 PetriNetUnfolderBase]: 11741/16554 cut-off events. [2024-06-21 19:02:06,919 INFO L125 PetriNetUnfolderBase]: For 169172/169174 co-relation queries the response was YES. [2024-06-21 19:02:06,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74096 conditions, 16554 events. 11741/16554 cut-off events. For 169172/169174 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 92697 event pairs, 5304 based on Foata normal form. 2/16536 useless extension candidates. Maximal degree in co-relation 74045. Up to 15875 conditions per place. [2024-06-21 19:02:07,046 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 163 selfloop transitions, 12 changer transitions 0/182 dead transitions. [2024-06-21 19:02:07,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 182 transitions, 2274 flow [2024-06-21 19:02:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 19:02:07,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 19:02:07,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-06-21 19:02:07,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-21 19:02:07,047 INFO L175 Difference]: Start difference. First operand has 112 places, 165 transitions, 1846 flow. Second operand 5 states and 120 transitions. [2024-06-21 19:02:07,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 182 transitions, 2274 flow [2024-06-21 19:02:07,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 182 transitions, 2196 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-21 19:02:07,196 INFO L231 Difference]: Finished difference. Result has 110 places, 169 transitions, 1847 flow [2024-06-21 19:02:07,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1847, PETRI_PLACES=110, PETRI_TRANSITIONS=169} [2024-06-21 19:02:07,197 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2024-06-21 19:02:07,197 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 169 transitions, 1847 flow [2024-06-21 19:02:07,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:07,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:07,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:07,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 19:02:07,198 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:07,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:07,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1854081831, now seen corresponding path program 1 times [2024-06-21 19:02:07,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:07,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652007655] [2024-06-21 19:02:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:07,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:08,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:08,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652007655] [2024-06-21 19:02:08,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652007655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:08,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:08,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:08,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042134044] [2024-06-21 19:02:08,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:08,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:08,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:08,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:08,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:08,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:08,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 169 transitions, 1847 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:08,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:08,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:08,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:10,742 INFO L124 PetriNetUnfolderBase]: 11821/16705 cut-off events. [2024-06-21 19:02:10,743 INFO L125 PetriNetUnfolderBase]: For 192096/192115 co-relation queries the response was YES. [2024-06-21 19:02:10,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78167 conditions, 16705 events. 11821/16705 cut-off events. For 192096/192115 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 93629 event pairs, 4671 based on Foata normal form. 26/16704 useless extension candidates. Maximal degree in co-relation 78117. Up to 15121 conditions per place. [2024-06-21 19:02:10,872 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 111 selfloop transitions, 106 changer transitions 0/224 dead transitions. [2024-06-21 19:02:10,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 224 transitions, 2735 flow [2024-06-21 19:02:10,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:10,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:10,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 193 transitions. [2024-06-21 19:02:10,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5202156334231806 [2024-06-21 19:02:10,873 INFO L175 Difference]: Start difference. First operand has 110 places, 169 transitions, 1847 flow. Second operand 7 states and 193 transitions. [2024-06-21 19:02:10,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 224 transitions, 2735 flow [2024-06-21 19:02:11,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 224 transitions, 2686 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-21 19:02:11,009 INFO L231 Difference]: Finished difference. Result has 115 places, 178 transitions, 2199 flow [2024-06-21 19:02:11,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2199, PETRI_PLACES=115, PETRI_TRANSITIONS=178} [2024-06-21 19:02:11,010 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 59 predicate places. [2024-06-21 19:02:11,010 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 178 transitions, 2199 flow [2024-06-21 19:02:11,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:11,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:11,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:11,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 19:02:11,011 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:11,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:11,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1854076251, now seen corresponding path program 2 times [2024-06-21 19:02:11,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:11,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357057781] [2024-06-21 19:02:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:11,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:12,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:12,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357057781] [2024-06-21 19:02:12,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357057781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:12,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:12,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:12,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818572848] [2024-06-21 19:02:12,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:12,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:12,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:12,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:12,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 178 transitions, 2199 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:12,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:12,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:12,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:14,707 INFO L124 PetriNetUnfolderBase]: 11901/16821 cut-off events. [2024-06-21 19:02:14,708 INFO L125 PetriNetUnfolderBase]: For 216458/216475 co-relation queries the response was YES. [2024-06-21 19:02:14,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81503 conditions, 16821 events. 11901/16821 cut-off events. For 216458/216475 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 94278 event pairs, 4667 based on Foata normal form. 24/16818 useless extension candidates. Maximal degree in co-relation 81450. Up to 15191 conditions per place. [2024-06-21 19:02:14,849 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 110 selfloop transitions, 112 changer transitions 0/229 dead transitions. [2024-06-21 19:02:14,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 229 transitions, 3098 flow [2024-06-21 19:02:14,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-06-21 19:02:14,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148247978436657 [2024-06-21 19:02:14,851 INFO L175 Difference]: Start difference. First operand has 115 places, 178 transitions, 2199 flow. Second operand 7 states and 191 transitions. [2024-06-21 19:02:14,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 229 transitions, 3098 flow [2024-06-21 19:02:14,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 229 transitions, 2930 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-06-21 19:02:14,980 INFO L231 Difference]: Finished difference. Result has 119 places, 186 transitions, 2398 flow [2024-06-21 19:02:14,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2039, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2398, PETRI_PLACES=119, PETRI_TRANSITIONS=186} [2024-06-21 19:02:14,981 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 63 predicate places. [2024-06-21 19:02:14,981 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 186 transitions, 2398 flow [2024-06-21 19:02:14,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:14,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:14,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:14,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 19:02:14,982 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:14,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:14,982 INFO L85 PathProgramCache]: Analyzing trace with hash 680788997, now seen corresponding path program 3 times [2024-06-21 19:02:14,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:14,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441085547] [2024-06-21 19:02:14,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:14,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:14,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:16,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:16,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441085547] [2024-06-21 19:02:16,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441085547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:16,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:16,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:16,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724013523] [2024-06-21 19:02:16,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:16,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:16,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:16,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:16,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:16,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:16,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 186 transitions, 2398 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:16,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:16,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:16,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:18,819 INFO L124 PetriNetUnfolderBase]: 11869/16783 cut-off events. [2024-06-21 19:02:18,820 INFO L125 PetriNetUnfolderBase]: For 238762/238791 co-relation queries the response was YES. [2024-06-21 19:02:18,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82340 conditions, 16783 events. 11869/16783 cut-off events. For 238762/238791 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 94120 event pairs, 4651 based on Foata normal form. 38/16786 useless extension candidates. Maximal degree in co-relation 82284. Up to 15164 conditions per place. [2024-06-21 19:02:18,941 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 107 selfloop transitions, 111 changer transitions 0/225 dead transitions. [2024-06-21 19:02:18,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 225 transitions, 3069 flow [2024-06-21 19:02:18,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:02:18,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:02:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-06-21 19:02:18,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49326145552560646 [2024-06-21 19:02:18,943 INFO L175 Difference]: Start difference. First operand has 119 places, 186 transitions, 2398 flow. Second operand 7 states and 183 transitions. [2024-06-21 19:02:18,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 225 transitions, 3069 flow [2024-06-21 19:02:19,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 225 transitions, 2837 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-21 19:02:19,093 INFO L231 Difference]: Finished difference. Result has 123 places, 186 transitions, 2405 flow [2024-06-21 19:02:19,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2405, PETRI_PLACES=123, PETRI_TRANSITIONS=186} [2024-06-21 19:02:19,094 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 67 predicate places. [2024-06-21 19:02:19,094 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 186 transitions, 2405 flow [2024-06-21 19:02:19,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:19,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:19,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:19,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 19:02:19,094 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:19,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:19,095 INFO L85 PathProgramCache]: Analyzing trace with hash -250260701, now seen corresponding path program 4 times [2024-06-21 19:02:19,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:19,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420120247] [2024-06-21 19:02:19,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:19,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:20,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:20,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:20,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420120247] [2024-06-21 19:02:20,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420120247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:20,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:20,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:20,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577420251] [2024-06-21 19:02:20,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:20,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:20,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:20,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:20,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:20,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:20,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 186 transitions, 2405 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:20,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:20,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:20,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:22,506 INFO L124 PetriNetUnfolderBase]: 12093/17087 cut-off events. [2024-06-21 19:02:22,506 INFO L125 PetriNetUnfolderBase]: For 262684/262709 co-relation queries the response was YES. [2024-06-21 19:02:22,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85037 conditions, 17087 events. 12093/17087 cut-off events. For 262684/262709 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 95752 event pairs, 4587 based on Foata normal form. 28/17094 useless extension candidates. Maximal degree in co-relation 84978. Up to 15338 conditions per place. [2024-06-21 19:02:22,614 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 118 selfloop transitions, 135 changer transitions 0/260 dead transitions. [2024-06-21 19:02:22,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 260 transitions, 3535 flow [2024-06-21 19:02:22,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:22,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 213 transitions. [2024-06-21 19:02:22,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023584905660378 [2024-06-21 19:02:22,617 INFO L175 Difference]: Start difference. First operand has 123 places, 186 transitions, 2405 flow. Second operand 8 states and 213 transitions. [2024-06-21 19:02:22,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 260 transitions, 3535 flow [2024-06-21 19:02:22,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 260 transitions, 3320 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-21 19:02:22,799 INFO L231 Difference]: Finished difference. Result has 128 places, 207 transitions, 2806 flow [2024-06-21 19:02:22,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2806, PETRI_PLACES=128, PETRI_TRANSITIONS=207} [2024-06-21 19:02:22,800 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2024-06-21 19:02:22,800 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 207 transitions, 2806 flow [2024-06-21 19:02:22,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:22,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:22,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:22,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 19:02:22,800 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:22,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:22,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1924225863, now seen corresponding path program 5 times [2024-06-21 19:02:22,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:22,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218971508] [2024-06-21 19:02:22,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:22,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:24,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:24,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218971508] [2024-06-21 19:02:24,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218971508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:24,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:24,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:24,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124674678] [2024-06-21 19:02:24,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:24,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:24,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:24,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:24,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:24,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:24,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 207 transitions, 2806 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:24,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:24,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:24,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:26,503 INFO L124 PetriNetUnfolderBase]: 12242/17343 cut-off events. [2024-06-21 19:02:26,504 INFO L125 PetriNetUnfolderBase]: For 292524/292551 co-relation queries the response was YES. [2024-06-21 19:02:26,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87864 conditions, 17343 events. 12242/17343 cut-off events. For 292524/292551 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 97536 event pairs, 4653 based on Foata normal form. 30/17352 useless extension candidates. Maximal degree in co-relation 87803. Up to 15461 conditions per place. [2024-06-21 19:02:26,716 INFO L140 encePairwiseOnDemand]: 37/53 looper letters, 112 selfloop transitions, 160 changer transitions 0/279 dead transitions. [2024-06-21 19:02:26,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 279 transitions, 3911 flow [2024-06-21 19:02:26,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:26,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:26,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-06-21 19:02:26,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-21 19:02:26,717 INFO L175 Difference]: Start difference. First operand has 128 places, 207 transitions, 2806 flow. Second operand 8 states and 212 transitions. [2024-06-21 19:02:26,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 279 transitions, 3911 flow [2024-06-21 19:02:26,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 279 transitions, 3686 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-21 19:02:26,966 INFO L231 Difference]: Finished difference. Result has 134 places, 235 transitions, 3487 flow [2024-06-21 19:02:26,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=2599, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3487, PETRI_PLACES=134, PETRI_TRANSITIONS=235} [2024-06-21 19:02:26,966 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2024-06-21 19:02:26,966 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 235 transitions, 3487 flow [2024-06-21 19:02:26,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:26,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:26,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:26,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 19:02:26,967 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:26,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:26,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1984087478, now seen corresponding path program 1 times [2024-06-21 19:02:26,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:26,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881002005] [2024-06-21 19:02:26,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:26,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:28,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:28,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:28,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881002005] [2024-06-21 19:02:28,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881002005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:28,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:28,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:28,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016628181] [2024-06-21 19:02:28,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:28,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:28,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:28,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:28,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:28,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:28,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 235 transitions, 3487 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:28,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:28,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:28,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:30,792 INFO L124 PetriNetUnfolderBase]: 12278/17354 cut-off events. [2024-06-21 19:02:30,792 INFO L125 PetriNetUnfolderBase]: For 322561/322578 co-relation queries the response was YES. [2024-06-21 19:02:30,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90369 conditions, 17354 events. 12278/17354 cut-off events. For 322561/322578 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 97236 event pairs, 5275 based on Foata normal form. 22/17341 useless extension candidates. Maximal degree in co-relation 90305. Up to 16265 conditions per place. [2024-06-21 19:02:30,948 INFO L140 encePairwiseOnDemand]: 40/53 looper letters, 193 selfloop transitions, 70 changer transitions 0/270 dead transitions. [2024-06-21 19:02:30,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 270 transitions, 4171 flow [2024-06-21 19:02:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:30,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-21 19:02:30,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45047169811320753 [2024-06-21 19:02:30,950 INFO L175 Difference]: Start difference. First operand has 134 places, 235 transitions, 3487 flow. Second operand 8 states and 191 transitions. [2024-06-21 19:02:30,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 270 transitions, 4171 flow [2024-06-21 19:02:31,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 270 transitions, 3980 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-21 19:02:31,300 INFO L231 Difference]: Finished difference. Result has 138 places, 238 transitions, 3496 flow [2024-06-21 19:02:31,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3496, PETRI_PLACES=138, PETRI_TRANSITIONS=238} [2024-06-21 19:02:31,300 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 82 predicate places. [2024-06-21 19:02:31,300 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 238 transitions, 3496 flow [2024-06-21 19:02:31,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:31,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:31,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:31,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 19:02:31,302 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:31,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1760114194, now seen corresponding path program 2 times [2024-06-21 19:02:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379189782] [2024-06-21 19:02:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:32,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:32,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379189782] [2024-06-21 19:02:32,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379189782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:32,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:32,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:02:32,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114438097] [2024-06-21 19:02:32,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:32,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:02:32,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:02:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:02:32,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:32,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 238 transitions, 3496 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:32,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:32,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:32,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:35,127 INFO L124 PetriNetUnfolderBase]: 12387/17505 cut-off events. [2024-06-21 19:02:35,127 INFO L125 PetriNetUnfolderBase]: For 353743/353772 co-relation queries the response was YES. [2024-06-21 19:02:35,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93130 conditions, 17505 events. 12387/17505 cut-off events. For 353743/353772 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 98293 event pairs, 5264 based on Foata normal form. 34/17499 useless extension candidates. Maximal degree in co-relation 93065. Up to 16298 conditions per place. [2024-06-21 19:02:35,298 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 202 selfloop transitions, 69 changer transitions 0/278 dead transitions. [2024-06-21 19:02:35,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 278 transitions, 4202 flow [2024-06-21 19:02:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:02:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:02:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-21 19:02:35,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2024-06-21 19:02:35,302 INFO L175 Difference]: Start difference. First operand has 138 places, 238 transitions, 3496 flow. Second operand 8 states and 192 transitions. [2024-06-21 19:02:35,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 278 transitions, 4202 flow [2024-06-21 19:02:35,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 278 transitions, 4034 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 19:02:35,651 INFO L231 Difference]: Finished difference. Result has 141 places, 245 transitions, 3565 flow [2024-06-21 19:02:35,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3328, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3565, PETRI_PLACES=141, PETRI_TRANSITIONS=245} [2024-06-21 19:02:35,651 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2024-06-21 19:02:35,651 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 245 transitions, 3565 flow [2024-06-21 19:02:35,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:35,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:35,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:35,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 19:02:35,653 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:35,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:35,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1641781366, now seen corresponding path program 1 times [2024-06-21 19:02:35,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:35,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860506579] [2024-06-21 19:02:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:35,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:35,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:37,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:37,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860506579] [2024-06-21 19:02:37,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860506579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:37,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:37,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:02:37,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186862429] [2024-06-21 19:02:37,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:37,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:02:37,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:37,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:02:37,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:02:37,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:37,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 245 transitions, 3565 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:37,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:37,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:37,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:40,419 INFO L124 PetriNetUnfolderBase]: 12587/17735 cut-off events. [2024-06-21 19:02:40,419 INFO L125 PetriNetUnfolderBase]: For 406016/406033 co-relation queries the response was YES. [2024-06-21 19:02:40,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97553 conditions, 17735 events. 12587/17735 cut-off events. For 406016/406033 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 99494 event pairs, 4261 based on Foata normal form. 50/17658 useless extension candidates. Maximal degree in co-relation 97486. Up to 15668 conditions per place. [2024-06-21 19:02:40,588 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 131 selfloop transitions, 157 changer transitions 0/295 dead transitions. [2024-06-21 19:02:40,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 295 transitions, 4367 flow [2024-06-21 19:02:40,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:02:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:02:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 224 transitions. [2024-06-21 19:02:40,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.469601677148847 [2024-06-21 19:02:40,590 INFO L175 Difference]: Start difference. First operand has 141 places, 245 transitions, 3565 flow. Second operand 9 states and 224 transitions. [2024-06-21 19:02:40,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 295 transitions, 4367 flow [2024-06-21 19:02:40,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 295 transitions, 4206 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-21 19:02:40,941 INFO L231 Difference]: Finished difference. Result has 145 places, 248 transitions, 3791 flow [2024-06-21 19:02:40,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3404, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3791, PETRI_PLACES=145, PETRI_TRANSITIONS=248} [2024-06-21 19:02:40,942 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2024-06-21 19:02:40,942 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 248 transitions, 3791 flow [2024-06-21 19:02:40,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:40,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:40,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:40,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 19:02:40,943 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:40,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:40,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1004982849, now seen corresponding path program 1 times [2024-06-21 19:02:40,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:40,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925439986] [2024-06-21 19:02:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:40,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:41,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:41,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925439986] [2024-06-21 19:02:41,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925439986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:41,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:41,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:02:41,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501965319] [2024-06-21 19:02:41,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:41,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:02:41,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:41,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:02:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:02:41,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:41,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 248 transitions, 3791 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:41,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:41,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:41,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:44,194 INFO L124 PetriNetUnfolderBase]: 12603/17793 cut-off events. [2024-06-21 19:02:44,194 INFO L125 PetriNetUnfolderBase]: For 432362/432376 co-relation queries the response was YES. [2024-06-21 19:02:44,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101552 conditions, 17793 events. 12603/17793 cut-off events. For 432362/432376 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 100144 event pairs, 5129 based on Foata normal form. 14/17696 useless extension candidates. Maximal degree in co-relation 101484. Up to 17038 conditions per place. [2024-06-21 19:02:44,378 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 243 selfloop transitions, 25 changer transitions 0/275 dead transitions. [2024-06-21 19:02:44,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 275 transitions, 4483 flow [2024-06-21 19:02:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:02:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:02:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-06-21 19:02:44,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2024-06-21 19:02:44,380 INFO L175 Difference]: Start difference. First operand has 145 places, 248 transitions, 3791 flow. Second operand 6 states and 146 transitions. [2024-06-21 19:02:44,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 275 transitions, 4483 flow [2024-06-21 19:02:44,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 275 transitions, 4107 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-21 19:02:44,874 INFO L231 Difference]: Finished difference. Result has 145 places, 253 transitions, 3559 flow [2024-06-21 19:02:44,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3559, PETRI_PLACES=145, PETRI_TRANSITIONS=253} [2024-06-21 19:02:44,876 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2024-06-21 19:02:44,876 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 253 transitions, 3559 flow [2024-06-21 19:02:44,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:44,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:44,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:44,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 19:02:44,877 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:44,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:44,877 INFO L85 PathProgramCache]: Analyzing trace with hash 740232046, now seen corresponding path program 2 times [2024-06-21 19:02:44,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:44,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904388506] [2024-06-21 19:02:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:44,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:46,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:46,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:46,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904388506] [2024-06-21 19:02:46,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904388506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:46,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:46,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:02:46,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758033457] [2024-06-21 19:02:46,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:46,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:02:46,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:46,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:02:46,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:02:46,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:46,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 253 transitions, 3559 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:46,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:46,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:46,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:49,485 INFO L124 PetriNetUnfolderBase]: 12639/17800 cut-off events. [2024-06-21 19:02:49,485 INFO L125 PetriNetUnfolderBase]: For 460829/460833 co-relation queries the response was YES. [2024-06-21 19:02:49,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103708 conditions, 17800 events. 12639/17800 cut-off events. For 460829/460833 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 99724 event pairs, 4516 based on Foata normal form. 10/17665 useless extension candidates. Maximal degree in co-relation 103639. Up to 15999 conditions per place. [2024-06-21 19:02:49,670 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 130 selfloop transitions, 169 changer transitions 0/306 dead transitions. [2024-06-21 19:02:49,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 306 transitions, 4443 flow [2024-06-21 19:02:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:02:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:02:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-21 19:02:49,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4591194968553459 [2024-06-21 19:02:49,672 INFO L175 Difference]: Start difference. First operand has 145 places, 253 transitions, 3559 flow. Second operand 9 states and 219 transitions. [2024-06-21 19:02:49,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 306 transitions, 4443 flow [2024-06-21 19:02:50,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 306 transitions, 4304 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-21 19:02:50,152 INFO L231 Difference]: Finished difference. Result has 152 places, 256 transitions, 3836 flow [2024-06-21 19:02:50,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3420, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3836, PETRI_PLACES=152, PETRI_TRANSITIONS=256} [2024-06-21 19:02:50,155 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 96 predicate places. [2024-06-21 19:02:50,155 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 256 transitions, 3836 flow [2024-06-21 19:02:50,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:50,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:50,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:50,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 19:02:50,156 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:50,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:50,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1807308246, now seen corresponding path program 3 times [2024-06-21 19:02:50,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:50,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200945113] [2024-06-21 19:02:50,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:50,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:52,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:52,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:52,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200945113] [2024-06-21 19:02:52,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200945113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:52,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:52,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:02:52,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630087879] [2024-06-21 19:02:52,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:52,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:02:52,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:52,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:02:52,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:02:52,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:52,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 256 transitions, 3836 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:52,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:52,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:52,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:02:55,528 INFO L124 PetriNetUnfolderBase]: 12675/17847 cut-off events. [2024-06-21 19:02:55,528 INFO L125 PetriNetUnfolderBase]: For 511470/511482 co-relation queries the response was YES. [2024-06-21 19:02:55,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107721 conditions, 17847 events. 12675/17847 cut-off events. For 511470/511482 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 99862 event pairs, 4502 based on Foata normal form. 18/17718 useless extension candidates. Maximal degree in co-relation 107650. Up to 16057 conditions per place. [2024-06-21 19:02:55,701 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 125 selfloop transitions, 173 changer transitions 0/305 dead transitions. [2024-06-21 19:02:55,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 305 transitions, 4682 flow [2024-06-21 19:02:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:02:55,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:02:55,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-21 19:02:55,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4570230607966457 [2024-06-21 19:02:55,703 INFO L175 Difference]: Start difference. First operand has 152 places, 256 transitions, 3836 flow. Second operand 9 states and 218 transitions. [2024-06-21 19:02:55,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 305 transitions, 4682 flow [2024-06-21 19:02:56,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 305 transitions, 4240 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-21 19:02:56,232 INFO L231 Difference]: Finished difference. Result has 153 places, 259 transitions, 3823 flow [2024-06-21 19:02:56,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3394, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3823, PETRI_PLACES=153, PETRI_TRANSITIONS=259} [2024-06-21 19:02:56,233 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2024-06-21 19:02:56,233 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 259 transitions, 3823 flow [2024-06-21 19:02:56,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:56,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:02:56,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:02:56,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 19:02:56,233 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:02:56,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:02:56,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1469647112, now seen corresponding path program 4 times [2024-06-21 19:02:56,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:02:56,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059935546] [2024-06-21 19:02:56,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:02:56,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:02:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:02:58,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:02:58,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:02:58,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059935546] [2024-06-21 19:02:58,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059935546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:02:58,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:02:58,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 19:02:58,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745018416] [2024-06-21 19:02:58,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:02:58,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 19:02:58,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:02:58,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 19:02:58,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 19:02:58,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:02:58,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 259 transitions, 3823 flow. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:02:58,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:02:58,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:02:58,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:01,266 INFO L124 PetriNetUnfolderBase]: 12944/18194 cut-off events. [2024-06-21 19:03:01,266 INFO L125 PetriNetUnfolderBase]: For 560573/560585 co-relation queries the response was YES. [2024-06-21 19:03:01,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113638 conditions, 18194 events. 12944/18194 cut-off events. For 560573/560585 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 102117 event pairs, 3697 based on Foata normal form. 18/18115 useless extension candidates. Maximal degree in co-relation 113567. Up to 15736 conditions per place. [2024-06-21 19:03:01,438 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 123 selfloop transitions, 187 changer transitions 0/317 dead transitions. [2024-06-21 19:03:01,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 317 transitions, 4929 flow [2024-06-21 19:03:01,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 19:03:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 19:03:01,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-21 19:03:01,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716981132075472 [2024-06-21 19:03:01,440 INFO L175 Difference]: Start difference. First operand has 153 places, 259 transitions, 3823 flow. Second operand 9 states and 225 transitions. [2024-06-21 19:03:01,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 317 transitions, 4929 flow [2024-06-21 19:03:02,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 317 transitions, 4528 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-21 19:03:02,053 INFO L231 Difference]: Finished difference. Result has 155 places, 265 transitions, 3956 flow [2024-06-21 19:03:02,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3422, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3956, PETRI_PLACES=155, PETRI_TRANSITIONS=265} [2024-06-21 19:03:02,054 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 99 predicate places. [2024-06-21 19:03:02,054 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 265 transitions, 3956 flow [2024-06-21 19:03:02,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:02,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:02,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:02,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 19:03:02,055 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:03:02,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:02,055 INFO L85 PathProgramCache]: Analyzing trace with hash -993555009, now seen corresponding path program 2 times [2024-06-21 19:03:02,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:02,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436150935] [2024-06-21 19:03:02,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:02,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:03,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:03,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:03,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436150935] [2024-06-21 19:03:03,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436150935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:03,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:03,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:03:03,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124981904] [2024-06-21 19:03:03,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:03,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:03:03,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:03,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:03:03,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:03:03,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:03:03,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 265 transitions, 3956 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:03,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:03,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:03:03,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:05,954 INFO L124 PetriNetUnfolderBase]: 12960/18297 cut-off events. [2024-06-21 19:03:05,954 INFO L125 PetriNetUnfolderBase]: For 600167/600186 co-relation queries the response was YES. [2024-06-21 19:03:06,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116913 conditions, 18297 events. 12960/18297 cut-off events. For 600167/600186 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 103559 event pairs, 5199 based on Foata normal form. 18/18276 useless extension candidates. Maximal degree in co-relation 116841. Up to 17529 conditions per place. [2024-06-21 19:03:06,188 INFO L140 encePairwiseOnDemand]: 42/53 looper letters, 251 selfloop transitions, 36 changer transitions 0/294 dead transitions. [2024-06-21 19:03:06,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 294 transitions, 4858 flow [2024-06-21 19:03:06,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 19:03:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 19:03:06,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2024-06-21 19:03:06,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4559748427672956 [2024-06-21 19:03:06,189 INFO L175 Difference]: Start difference. First operand has 155 places, 265 transitions, 3956 flow. Second operand 6 states and 145 transitions. [2024-06-21 19:03:06,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 294 transitions, 4858 flow [2024-06-21 19:03:06,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 294 transitions, 4446 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-21 19:03:06,816 INFO L231 Difference]: Finished difference. Result has 155 places, 273 transitions, 3773 flow [2024-06-21 19:03:06,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3548, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3773, PETRI_PLACES=155, PETRI_TRANSITIONS=273} [2024-06-21 19:03:06,818 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 99 predicate places. [2024-06-21 19:03:06,818 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 273 transitions, 3773 flow [2024-06-21 19:03:06,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:06,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:06,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:06,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 19:03:06,819 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:03:06,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:06,819 INFO L85 PathProgramCache]: Analyzing trace with hash -717767094, now seen corresponding path program 3 times [2024-06-21 19:03:06,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:06,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157361495] [2024-06-21 19:03:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:06,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:08,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:08,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157361495] [2024-06-21 19:03:08,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157361495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:08,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:08,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:03:08,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942467443] [2024-06-21 19:03:08,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:08,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:03:08,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:08,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:03:08,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:03:08,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:03:08,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 273 transitions, 3773 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:08,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:08,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:03:08,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:11,308 INFO L124 PetriNetUnfolderBase]: 13026/18368 cut-off events. [2024-06-21 19:03:11,308 INFO L125 PetriNetUnfolderBase]: For 631711/631730 co-relation queries the response was YES. [2024-06-21 19:03:11,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118717 conditions, 18368 events. 13026/18368 cut-off events. For 631711/631730 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 103908 event pairs, 5166 based on Foata normal form. 24/18356 useless extension candidates. Maximal degree in co-relation 118644. Up to 17345 conditions per place. [2024-06-21 19:03:11,509 INFO L140 encePairwiseOnDemand]: 38/53 looper letters, 235 selfloop transitions, 76 changer transitions 0/318 dead transitions. [2024-06-21 19:03:11,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 318 transitions, 4605 flow [2024-06-21 19:03:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:11,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:11,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-06-21 19:03:11,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47641509433962265 [2024-06-21 19:03:11,511 INFO L175 Difference]: Start difference. First operand has 155 places, 273 transitions, 3773 flow. Second operand 8 states and 202 transitions. [2024-06-21 19:03:11,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 318 transitions, 4605 flow [2024-06-21 19:03:12,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 318 transitions, 4514 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-21 19:03:12,123 INFO L231 Difference]: Finished difference. Result has 161 places, 279 transitions, 3950 flow [2024-06-21 19:03:12,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3682, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3950, PETRI_PLACES=161, PETRI_TRANSITIONS=279} [2024-06-21 19:03:12,124 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 105 predicate places. [2024-06-21 19:03:12,124 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 279 transitions, 3950 flow [2024-06-21 19:03:12,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:12,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:12,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:12,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 19:03:12,125 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:03:12,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:12,125 INFO L85 PathProgramCache]: Analyzing trace with hash 190624984, now seen corresponding path program 4 times [2024-06-21 19:03:12,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:12,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879266008] [2024-06-21 19:03:12,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:12,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:12,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:13,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:13,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:13,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879266008] [2024-06-21 19:03:13,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879266008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:13,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:13,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 19:03:13,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051458470] [2024-06-21 19:03:13,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:13,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 19:03:13,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:13,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 19:03:13,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-21 19:03:13,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:03:13,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 279 transitions, 3950 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:13,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:13,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:03:13,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:16,553 INFO L124 PetriNetUnfolderBase]: 13219/18661 cut-off events. [2024-06-21 19:03:16,554 INFO L125 PetriNetUnfolderBase]: For 682739/682766 co-relation queries the response was YES. [2024-06-21 19:03:16,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123238 conditions, 18661 events. 13219/18661 cut-off events. For 682739/682766 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 105999 event pairs, 5211 based on Foata normal form. 32/18657 useless extension candidates. Maximal degree in co-relation 123163. Up to 17403 conditions per place. [2024-06-21 19:03:16,733 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 244 selfloop transitions, 85 changer transitions 0/336 dead transitions. [2024-06-21 19:03:16,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 336 transitions, 4892 flow [2024-06-21 19:03:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 19:03:16,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 19:03:16,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-21 19:03:16,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47877358490566035 [2024-06-21 19:03:16,751 INFO L175 Difference]: Start difference. First operand has 161 places, 279 transitions, 3950 flow. Second operand 8 states and 203 transitions. [2024-06-21 19:03:16,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 336 transitions, 4892 flow [2024-06-21 19:03:17,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 336 transitions, 4709 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-21 19:03:17,465 INFO L231 Difference]: Finished difference. Result has 165 places, 295 transitions, 4165 flow [2024-06-21 19:03:17,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3767, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4165, PETRI_PLACES=165, PETRI_TRANSITIONS=295} [2024-06-21 19:03:17,466 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 109 predicate places. [2024-06-21 19:03:17,466 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 295 transitions, 4165 flow [2024-06-21 19:03:17,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:17,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:17,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:17,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 19:03:17,467 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:03:17,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:17,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1428049952, now seen corresponding path program 5 times [2024-06-21 19:03:17,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:17,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441949781] [2024-06-21 19:03:17,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:17,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:18,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:18,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441949781] [2024-06-21 19:03:18,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441949781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:18,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:18,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 19:03:18,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993045812] [2024-06-21 19:03:18,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:18,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 19:03:18,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:18,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 19:03:18,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 19:03:18,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 53 [2024-06-21 19:03:18,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 295 transitions, 4165 flow. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:18,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:18,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 53 [2024-06-21 19:03:18,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 19:03:21,177 INFO L124 PetriNetUnfolderBase]: 8882/13736 cut-off events. [2024-06-21 19:03:21,177 INFO L125 PetriNetUnfolderBase]: For 524839/525024 co-relation queries the response was YES. [2024-06-21 19:03:21,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92831 conditions, 13736 events. 8882/13736 cut-off events. For 524839/525024 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 88945 event pairs, 2811 based on Foata normal form. 161/13749 useless extension candidates. Maximal degree in co-relation 92754. Up to 11153 conditions per place. [2024-06-21 19:03:21,299 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 168 selfloop transitions, 114 changer transitions 0/345 dead transitions. [2024-06-21 19:03:21,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 345 transitions, 5017 flow [2024-06-21 19:03:21,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 19:03:21,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 19:03:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-06-21 19:03:21,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5390835579514824 [2024-06-21 19:03:21,301 INFO L175 Difference]: Start difference. First operand has 165 places, 295 transitions, 4165 flow. Second operand 7 states and 200 transitions. [2024-06-21 19:03:21,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 345 transitions, 5017 flow [2024-06-21 19:03:21,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 345 transitions, 4813 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-21 19:03:21,857 INFO L231 Difference]: Finished difference. Result has 169 places, 313 transitions, 4525 flow [2024-06-21 19:03:21,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=3961, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4525, PETRI_PLACES=169, PETRI_TRANSITIONS=313} [2024-06-21 19:03:21,857 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 113 predicate places. [2024-06-21 19:03:21,857 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 313 transitions, 4525 flow [2024-06-21 19:03:21,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 6 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:21,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 19:03:21,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 19:03:21,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 19:03:21,858 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-21 19:03:21,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 19:03:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1066253236, now seen corresponding path program 5 times [2024-06-21 19:03:21,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 19:03:21,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727825046] [2024-06-21 19:03:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 19:03:21,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 19:03:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 19:03:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 19:03:23,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 19:03:23,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727825046] [2024-06-21 19:03:23,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727825046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 19:03:23,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 19:03:23,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 19:03:23,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308160988] [2024-06-21 19:03:23,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 19:03:23,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 19:03:23,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 19:03:23,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 19:03:23,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 19:03:24,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 53 [2024-06-21 19:03:24,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 313 transitions, 4525 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 19:03:24,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 19:03:24,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 53 [2024-06-21 19:03:24,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand