./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix032.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-nonrel/mix032.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix032.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix032.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-7724a2d-m [2024-06-28 03:16:13,673 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:16:13,730 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:16:13,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:16:13,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:16:13,754 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:16:13,754 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:16:13,754 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:16:13,755 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:16:13,755 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:16:13,755 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:16:13,755 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:16:13,756 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:16:13,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:16:13,757 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:16:13,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:16:13,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:16:13,757 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:16:13,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:16:13,758 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:16:13,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:16:13,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:16:13,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:16:13,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:16:13,760 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:16:13,760 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:16:13,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:16:13,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:16:13,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:16:13,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:16:13,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:16:13,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:16:13,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:16:13,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:16:13,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:16:13,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:16:13,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:16:13,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:16:13,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:16:13,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:16:13,763 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:16:13,764 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:16:13,764 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:16:13,764 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:16:13,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:16:13,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:16:13,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:16:13,938 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:16:13,938 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:16:13,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix032.oepc.yml/witness.yml [2024-06-28 03:16:14,139 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:16:14,139 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:16:14,141 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix032.oepc.i [2024-06-28 03:16:15,086 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:16:15,308 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:16:15,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix032.oepc.i [2024-06-28 03:16:15,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edb00fa9/71ffcfc518f947e895e99550f95c6085/FLAGcd69b68e3 [2024-06-28 03:16:15,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8edb00fa9/71ffcfc518f947e895e99550f95c6085 [2024-06-28 03:16:15,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:16:15,343 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:16:15,345 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:16:15,346 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:16:15,350 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:16:15,351 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:16:14" (1/2) ... [2024-06-28 03:16:15,352 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d98af3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:15, skipping insertion in model container [2024-06-28 03:16:15,352 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:16:14" (1/2) ... [2024-06-28 03:16:15,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1cb26d2f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:16:15, skipping insertion in model container [2024-06-28 03:16:15,353 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:16:15" (2/2) ... [2024-06-28 03:16:15,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21d98af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15, skipping insertion in model container [2024-06-28 03:16:15,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:16:15" (2/2) ... [2024-06-28 03:16:15,354 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:16:15,470 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:16:15,471 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) [2024-06-28 03:16:15,472 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) [2024-06-28 03:16:15,472 INFO L97 edCorrectnessWitness]: Location invariant before [L858-L858] ((((((((((((((((((((((! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (b$mem_tmp == 0 || b$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || ((((((((((((((((((((((0 <= __unbuffered_cnt && b$flush_delayed == (_Bool)0) && b$r_buff0_thd0 == (_Bool)0) && b$r_buff0_thd2 == (_Bool)0) && b$r_buff0_thd3 == (_Bool)0) && b$r_buff1_thd0 == (_Bool)0) && b$r_buff1_thd2 == (_Bool)0) && b$r_buff1_thd3 == (_Bool)0) && b$read_delayed == (_Bool)0) && b$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)) && (a == 0 || a == 1)) && (b == 0 || b == 1)) && (b$mem_tmp == 0 || b$mem_tmp == 1)) && (b$w_buff0 == 0 || b$w_buff0 == 1)) && (b$w_buff1 == 0 || b$w_buff1 == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || b$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || b$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || b$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || b$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || b$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || b$read_delayed_var == 0)) && (! multithreaded || b$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (b$w_buff1 == 0 || b$w_buff1 == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || b$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (b$w_buff0 == 0 || b$w_buff0 == 1)) [2024-06-28 03:16:15,472 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:16:15,472 INFO L106 edCorrectnessWitness]: ghost_update [L856-L856] multithreaded = 1; [2024-06-28 03:16:15,502 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:16:15,719 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:16:15,726 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:16:15,821 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:16:15,851 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:16:15,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15 WrapperNode [2024-06-28 03:16:15,852 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:16:15,853 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:16:15,853 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:16:15,853 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:16:15,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,877 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,906 INFO L138 Inliner]: procedures = 175, calls = 51, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 130 [2024-06-28 03:16:15,911 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:16:15,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:16:15,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:16:15,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:16:15,920 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,921 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,923 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,937 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:16:15,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,946 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,948 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,949 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,951 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:16:15,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:16:15,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:16:15,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:16:15,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (1/1) ... [2024-06-28 03:16:15,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:16:15,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:16:15,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:16:16,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:16:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:16:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:16:16,027 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:16:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:16:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:16:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:16:16,028 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:16:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:16:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:16:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:16:16,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:16:16,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:16:16,031 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:16:16,151 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:16:16,152 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:16:16,494 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:16:16,494 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:16:16,647 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:16:16,647 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:16:16,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:16:16 BoogieIcfgContainer [2024-06-28 03:16:16,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:16:16,651 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:16:16,651 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:16:16,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:16:16,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:16:14" (1/4) ... [2024-06-28 03:16:16,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0f6a1c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:16:16, skipping insertion in model container [2024-06-28 03:16:16,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:16:15" (2/4) ... [2024-06-28 03:16:16,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0f6a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:16:16, skipping insertion in model container [2024-06-28 03:16:16,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:16:15" (3/4) ... [2024-06-28 03:16:16,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b0f6a1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:16:16, skipping insertion in model container [2024-06-28 03:16:16,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:16:16" (4/4) ... [2024-06-28 03:16:16,657 INFO L112 eAbstractionObserver]: Analyzing ICFG mix032.oepc.i [2024-06-28 03:16:16,669 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:16:16,670 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:16:16,670 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:16:16,720 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:16:16,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 44 transitions, 100 flow [2024-06-28 03:16:16,782 INFO L124 PetriNetUnfolderBase]: 0/41 cut-off events. [2024-06-28 03:16:16,783 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:16:16,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 41 events. 0/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:16:16,784 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 44 transitions, 100 flow [2024-06-28 03:16:16,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 35 transitions, 79 flow [2024-06-28 03:16:16,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:16:16,809 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;@2d96e3cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:16:16,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:16:16,814 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:16:16,814 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:16:16,814 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:16:16,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:16,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:16:16,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:16,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:16,821 INFO L85 PathProgramCache]: Analyzing trace with hash 385894303, now seen corresponding path program 1 times [2024-06-28 03:16:16,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:16,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824908468] [2024-06-28 03:16:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:16,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:17,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:17,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824908468] [2024-06-28 03:16:17,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824908468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:17,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:17,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:16:17,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099206613] [2024-06-28 03:16:17,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:17,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:16:17,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:16:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:16:17,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-28 03:16:17,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:17,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:17,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-28 03:16:17,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:18,254 INFO L124 PetriNetUnfolderBase]: 1566/2436 cut-off events. [2024-06-28 03:16:18,255 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-06-28 03:16:18,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4847 conditions, 2436 events. 1566/2436 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12309 event pairs, 1097 based on Foata normal form. 1/2362 useless extension candidates. Maximal degree in co-relation 4835. Up to 2326 conditions per place. [2024-06-28 03:16:18,272 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 33 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 03:16:18,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 179 flow [2024-06-28 03:16:18,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:16:18,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:16:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-28 03:16:18,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-06-28 03:16:18,283 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 79 flow. Second operand 3 states and 82 transitions. [2024-06-28 03:16:18,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 179 flow [2024-06-28 03:16:18,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:18,290 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 106 flow [2024-06-28 03:16:18,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 03:16:18,294 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2024-06-28 03:16:18,294 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 106 flow [2024-06-28 03:16:18,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:18,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:18,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:18,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:16:18,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:18,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:18,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1477883188, now seen corresponding path program 1 times [2024-06-28 03:16:18,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:18,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955981057] [2024-06-28 03:16:18,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:18,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:18,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:18,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:18,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955981057] [2024-06-28 03:16:18,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955981057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:18,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:18,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:16:18,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833699744] [2024-06-28 03:16:18,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:18,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:16:18,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:18,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:16:18,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:16:19,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 44 [2024-06-28 03:16:19,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 106 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) [2024-06-28 03:16:19,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:19,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 44 [2024-06-28 03:16:19,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:19,337 INFO L124 PetriNetUnfolderBase]: 1560/2433 cut-off events. [2024-06-28 03:16:19,337 INFO L125 PetriNetUnfolderBase]: For 472/472 co-relation queries the response was YES. [2024-06-28 03:16:19,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5449 conditions, 2433 events. 1560/2433 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12315 event pairs, 930 based on Foata normal form. 3/2397 useless extension candidates. Maximal degree in co-relation 5437. Up to 2302 conditions per place. [2024-06-28 03:16:19,347 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 40 selfloop transitions, 7 changer transitions 0/55 dead transitions. [2024-06-28 03:16:19,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 55 transitions, 246 flow [2024-06-28 03:16:19,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:16:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:16:19,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-06-28 03:16:19,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6022727272727273 [2024-06-28 03:16:19,349 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 106 flow. Second operand 4 states and 106 transitions. [2024-06-28 03:16:19,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 55 transitions, 246 flow [2024-06-28 03:16:19,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:16:19,351 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 142 flow [2024-06-28 03:16:19,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-06-28 03:16:19,352 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2024-06-28 03:16:19,352 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 142 flow [2024-06-28 03:16:19,352 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) [2024-06-28 03:16:19,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:19,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:19,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:16:19,353 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:19,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1388389293, now seen corresponding path program 1 times [2024-06-28 03:16:19,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:19,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606969160] [2024-06-28 03:16:19,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:19,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:20,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:20,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606969160] [2024-06-28 03:16:20,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606969160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:20,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:20,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:16:20,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623448672] [2024-06-28 03:16:20,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:20,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:16:20,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:20,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:16:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:16:20,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:16:20,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 142 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:20,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:20,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:16:20,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:20,724 INFO L124 PetriNetUnfolderBase]: 1893/2922 cut-off events. [2024-06-28 03:16:20,725 INFO L125 PetriNetUnfolderBase]: For 1525/1525 co-relation queries the response was YES. [2024-06-28 03:16:20,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7209 conditions, 2922 events. 1893/2922 cut-off events. For 1525/1525 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14776 event pairs, 878 based on Foata normal form. 3/2877 useless extension candidates. Maximal degree in co-relation 7195. Up to 2753 conditions per place. [2024-06-28 03:16:20,736 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 55 selfloop transitions, 13 changer transitions 0/75 dead transitions. [2024-06-28 03:16:20,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 380 flow [2024-06-28 03:16:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:16:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:16:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-06-28 03:16:20,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5643939393939394 [2024-06-28 03:16:20,739 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 142 flow. Second operand 6 states and 149 transitions. [2024-06-28 03:16:20,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 380 flow [2024-06-28 03:16:20,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 360 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 03:16:20,742 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 200 flow [2024-06-28 03:16:20,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 03:16:20,743 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 8 predicate places. [2024-06-28 03:16:20,743 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 200 flow [2024-06-28 03:16:20,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:20,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:20,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:20,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:16:20,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:20,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash -946889695, now seen corresponding path program 1 times [2024-06-28 03:16:20,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:20,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282019370] [2024-06-28 03:16:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:20,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:21,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:21,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:21,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282019370] [2024-06-28 03:16:21,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282019370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:21,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:21,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:21,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085368998] [2024-06-28 03:16:21,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:21,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:21,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:21,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:21,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:21,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2024-06-28 03:16:21,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:21,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:21,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2024-06-28 03:16:21,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:22,128 INFO L124 PetriNetUnfolderBase]: 1884/2903 cut-off events. [2024-06-28 03:16:22,129 INFO L125 PetriNetUnfolderBase]: For 3016/3016 co-relation queries the response was YES. [2024-06-28 03:16:22,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7974 conditions, 2903 events. 1884/2903 cut-off events. For 3016/3016 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14621 event pairs, 690 based on Foata normal form. 6/2859 useless extension candidates. Maximal degree in co-relation 7958. Up to 2708 conditions per place. [2024-06-28 03:16:22,143 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 59 selfloop transitions, 15 changer transitions 0/81 dead transitions. [2024-06-28 03:16:22,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 440 flow [2024-06-28 03:16:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-06-28 03:16:22,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-28 03:16:22,145 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 200 flow. Second operand 7 states and 168 transitions. [2024-06-28 03:16:22,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 440 flow [2024-06-28 03:16:22,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 412 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:22,149 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 221 flow [2024-06-28 03:16:22,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=221, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-28 03:16:22,149 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2024-06-28 03:16:22,149 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 221 flow [2024-06-28 03:16:22,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:22,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:22,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:22,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:16:22,150 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:22,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:22,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1725653254, now seen corresponding path program 1 times [2024-06-28 03:16:22,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:22,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736897552] [2024-06-28 03:16:22,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:22,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:22,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:22,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:22,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736897552] [2024-06-28 03:16:22,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736897552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:22,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:22,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:16:22,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53694020] [2024-06-28 03:16:22,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:22,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:16:22,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:22,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:16:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:16:22,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:22,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:22,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:22,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:22,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:23,268 INFO L124 PetriNetUnfolderBase]: 1879/2896 cut-off events. [2024-06-28 03:16:23,268 INFO L125 PetriNetUnfolderBase]: For 4612/4612 co-relation queries the response was YES. [2024-06-28 03:16:23,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8452 conditions, 2896 events. 1879/2896 cut-off events. For 4612/4612 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 14550 event pairs, 812 based on Foata normal form. 2/2848 useless extension candidates. Maximal degree in co-relation 8434. Up to 2767 conditions per place. [2024-06-28 03:16:23,283 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 48 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2024-06-28 03:16:23,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 62 transitions, 377 flow [2024-06-28 03:16:23,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:16:23,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:16:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-06-28 03:16:23,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2024-06-28 03:16:23,285 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 221 flow. Second operand 5 states and 102 transitions. [2024-06-28 03:16:23,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 62 transitions, 377 flow [2024-06-28 03:16:23,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 62 transitions, 338 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:23,288 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 228 flow [2024-06-28 03:16:23,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-28 03:16:23,289 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2024-06-28 03:16:23,289 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 228 flow [2024-06-28 03:16:23,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:23,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:23,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:23,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:16:23,290 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:23,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:23,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1955641704, now seen corresponding path program 1 times [2024-06-28 03:16:23,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:23,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003301577] [2024-06-28 03:16:23,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:23,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003301577] [2024-06-28 03:16:23,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003301577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:23,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:23,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:23,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871074169] [2024-06-28 03:16:23,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:23,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:23,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:23,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:23,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:24,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:24,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:24,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:24,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:24,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:24,691 INFO L124 PetriNetUnfolderBase]: 2215/3407 cut-off events. [2024-06-28 03:16:24,692 INFO L125 PetriNetUnfolderBase]: For 7255/7255 co-relation queries the response was YES. [2024-06-28 03:16:24,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10468 conditions, 3407 events. 2215/3407 cut-off events. For 7255/7255 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17101 event pairs, 972 based on Foata normal form. 2/3399 useless extension candidates. Maximal degree in co-relation 10448. Up to 3242 conditions per place. [2024-06-28 03:16:24,705 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 53 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2024-06-28 03:16:24,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 414 flow [2024-06-28 03:16:24,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:16:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:16:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 03:16:24,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-06-28 03:16:24,707 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 228 flow. Second operand 6 states and 115 transitions. [2024-06-28 03:16:24,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 414 flow [2024-06-28 03:16:24,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 392 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:24,710 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 262 flow [2024-06-28 03:16:24,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=262, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-06-28 03:16:24,711 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 14 predicate places. [2024-06-28 03:16:24,711 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 262 flow [2024-06-28 03:16:24,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:24,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:24,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:24,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:16:24,712 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:24,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash 695777733, now seen corresponding path program 1 times [2024-06-28 03:16:24,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:24,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505807396] [2024-06-28 03:16:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:24,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:25,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:25,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505807396] [2024-06-28 03:16:25,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505807396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:25,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:25,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:25,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655517630] [2024-06-28 03:16:25,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:25,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:25,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:25,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:25,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:25,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:25,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:25,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:25,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:25,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:26,078 INFO L124 PetriNetUnfolderBase]: 2173/3384 cut-off events. [2024-06-28 03:16:26,078 INFO L125 PetriNetUnfolderBase]: For 11012/11018 co-relation queries the response was YES. [2024-06-28 03:16:26,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11256 conditions, 3384 events. 2173/3384 cut-off events. For 11012/11018 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17471 event pairs, 1261 based on Foata normal form. 6/3320 useless extension candidates. Maximal degree in co-relation 11235. Up to 3141 conditions per place. [2024-06-28 03:16:26,094 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 57 selfloop transitions, 18 changer transitions 0/82 dead transitions. [2024-06-28 03:16:26,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 550 flow [2024-06-28 03:16:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 03:16:26,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-06-28 03:16:26,095 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 262 flow. Second operand 7 states and 137 transitions. [2024-06-28 03:16:26,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 550 flow [2024-06-28 03:16:26,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 82 transitions, 516 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:26,099 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 367 flow [2024-06-28 03:16:26,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2024-06-28 03:16:26,100 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 19 predicate places. [2024-06-28 03:16:26,100 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 367 flow [2024-06-28 03:16:26,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:26,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:26,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:26,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:16:26,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:26,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:26,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1805651737, now seen corresponding path program 2 times [2024-06-28 03:16:26,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:26,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177045583] [2024-06-28 03:16:26,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:26,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:26,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:26,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177045583] [2024-06-28 03:16:26,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177045583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:26,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:26,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:26,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921065697] [2024-06-28 03:16:26,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:26,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:26,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:26,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:26,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:26,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:26,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 367 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:26,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:26,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:26,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:27,445 INFO L124 PetriNetUnfolderBase]: 2175/3377 cut-off events. [2024-06-28 03:16:27,445 INFO L125 PetriNetUnfolderBase]: For 14402/14408 co-relation queries the response was YES. [2024-06-28 03:16:27,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12139 conditions, 3377 events. 2175/3377 cut-off events. For 14402/14408 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17472 event pairs, 1150 based on Foata normal form. 6/3320 useless extension candidates. Maximal degree in co-relation 12115. Up to 3105 conditions per place. [2024-06-28 03:16:27,462 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 62 selfloop transitions, 37 changer transitions 0/106 dead transitions. [2024-06-28 03:16:27,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 826 flow [2024-06-28 03:16:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:27,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2024-06-28 03:16:27,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-06-28 03:16:27,463 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 367 flow. Second operand 7 states and 148 transitions. [2024-06-28 03:16:27,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 826 flow [2024-06-28 03:16:27,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 106 transitions, 776 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-28 03:16:27,469 INFO L231 Difference]: Finished difference. Result has 72 places, 83 transitions, 602 flow [2024-06-28 03:16:27,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=602, PETRI_PLACES=72, PETRI_TRANSITIONS=83} [2024-06-28 03:16:27,470 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2024-06-28 03:16:27,470 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 83 transitions, 602 flow [2024-06-28 03:16:27,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:27,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:27,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:27,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:16:27,471 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:27,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:27,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1150889767, now seen corresponding path program 3 times [2024-06-28 03:16:27,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:27,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961858525] [2024-06-28 03:16:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:27,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:28,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:28,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:28,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961858525] [2024-06-28 03:16:28,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961858525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:28,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:28,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:16:28,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579685530] [2024-06-28 03:16:28,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:28,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:16:28,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:28,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:16:28,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:16:28,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:28,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 83 transitions, 602 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:28,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:28,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:28,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:28,718 INFO L124 PetriNetUnfolderBase]: 2189/3403 cut-off events. [2024-06-28 03:16:28,718 INFO L125 PetriNetUnfolderBase]: For 18661/18661 co-relation queries the response was YES. [2024-06-28 03:16:28,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13141 conditions, 3403 events. 2189/3403 cut-off events. For 18661/18661 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17575 event pairs, 1233 based on Foata normal form. 3/3341 useless extension candidates. Maximal degree in co-relation 13112. Up to 3183 conditions per place. [2024-06-28 03:16:28,732 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 75 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2024-06-28 03:16:28,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 826 flow [2024-06-28 03:16:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:16:28,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:16:28,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-28 03:16:28,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:16:28,734 INFO L175 Difference]: Start difference. First operand has 72 places, 83 transitions, 602 flow. Second operand 6 states and 120 transitions. [2024-06-28 03:16:28,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 826 flow [2024-06-28 03:16:28,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 97 transitions, 746 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:28,745 INFO L231 Difference]: Finished difference. Result has 75 places, 83 transitions, 563 flow [2024-06-28 03:16:28,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=563, PETRI_PLACES=75, PETRI_TRANSITIONS=83} [2024-06-28 03:16:28,745 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 30 predicate places. [2024-06-28 03:16:28,746 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 83 transitions, 563 flow [2024-06-28 03:16:28,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:28,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:28,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:28,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:16:28,746 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:28,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:28,747 INFO L85 PathProgramCache]: Analyzing trace with hash -495349031, now seen corresponding path program 1 times [2024-06-28 03:16:28,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:28,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622796556] [2024-06-28 03:16:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:28,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:29,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:29,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622796556] [2024-06-28 03:16:29,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622796556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:29,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:29,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:29,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729273299] [2024-06-28 03:16:29,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:29,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:29,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:29,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:29,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:29,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 83 transitions, 563 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 03:16:29,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:29,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:29,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:30,344 INFO L124 PetriNetUnfolderBase]: 2262/3470 cut-off events. [2024-06-28 03:16:30,344 INFO L125 PetriNetUnfolderBase]: For 19910/19910 co-relation queries the response was YES. [2024-06-28 03:16:30,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13432 conditions, 3470 events. 2262/3470 cut-off events. For 19910/19910 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 17399 event pairs, 1259 based on Foata normal form. 4/3450 useless extension candidates. Maximal degree in co-relation 13402. Up to 3293 conditions per place. [2024-06-28 03:16:30,359 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 85 selfloop transitions, 15 changer transitions 0/105 dead transitions. [2024-06-28 03:16:30,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 847 flow [2024-06-28 03:16:30,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 03:16:30,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:16:30,361 INFO L175 Difference]: Start difference. First operand has 75 places, 83 transitions, 563 flow. Second operand 7 states and 133 transitions. [2024-06-28 03:16:30,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 847 flow [2024-06-28 03:16:30,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 105 transitions, 816 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:30,372 INFO L231 Difference]: Finished difference. Result has 78 places, 86 transitions, 604 flow [2024-06-28 03:16:30,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=604, PETRI_PLACES=78, PETRI_TRANSITIONS=86} [2024-06-28 03:16:30,374 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 33 predicate places. [2024-06-28 03:16:30,374 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 86 transitions, 604 flow [2024-06-28 03:16:30,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 03:16:30,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:30,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:30,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:16:30,375 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:30,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:30,375 INFO L85 PathProgramCache]: Analyzing trace with hash -310540743, now seen corresponding path program 1 times [2024-06-28 03:16:30,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:30,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891013253] [2024-06-28 03:16:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:30,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:31,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:31,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891013253] [2024-06-28 03:16:31,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891013253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:31,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:31,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:31,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243366723] [2024-06-28 03:16:31,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:31,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:31,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:31,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:31,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:31,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 86 transitions, 604 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:31,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:31,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:31,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:32,038 INFO L124 PetriNetUnfolderBase]: 2205/3417 cut-off events. [2024-06-28 03:16:32,038 INFO L125 PetriNetUnfolderBase]: For 25036/25040 co-relation queries the response was YES. [2024-06-28 03:16:32,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14227 conditions, 3417 events. 2205/3417 cut-off events. For 25036/25040 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17611 event pairs, 1085 based on Foata normal form. 4/3359 useless extension candidates. Maximal degree in co-relation 14196. Up to 3146 conditions per place. [2024-06-28 03:16:32,057 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 95 selfloop transitions, 34 changer transitions 0/136 dead transitions. [2024-06-28 03:16:32,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 136 transitions, 1150 flow [2024-06-28 03:16:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 03:16:32,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:16:32,059 INFO L175 Difference]: Start difference. First operand has 78 places, 86 transitions, 604 flow. Second operand 10 states and 200 transitions. [2024-06-28 03:16:32,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 136 transitions, 1150 flow [2024-06-28 03:16:32,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 136 transitions, 1102 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:32,071 INFO L231 Difference]: Finished difference. Result has 85 places, 101 transitions, 782 flow [2024-06-28 03:16:32,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=782, PETRI_PLACES=85, PETRI_TRANSITIONS=101} [2024-06-28 03:16:32,072 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 40 predicate places. [2024-06-28 03:16:32,072 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 101 transitions, 782 flow [2024-06-28 03:16:32,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:32,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:32,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:32,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:16:32,073 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:32,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:32,073 INFO L85 PathProgramCache]: Analyzing trace with hash 388077513, now seen corresponding path program 2 times [2024-06-28 03:16:32,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:32,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672581989] [2024-06-28 03:16:32,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:32,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:32,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:32,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:32,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672581989] [2024-06-28 03:16:32,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672581989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:32,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:32,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:32,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616511989] [2024-06-28 03:16:32,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:32,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:32,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:32,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:32,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:32,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:32,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 101 transitions, 782 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:32,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:32,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:32,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:33,603 INFO L124 PetriNetUnfolderBase]: 2239/3477 cut-off events. [2024-06-28 03:16:33,604 INFO L125 PetriNetUnfolderBase]: For 29999/30002 co-relation queries the response was YES. [2024-06-28 03:16:33,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15374 conditions, 3477 events. 2239/3477 cut-off events. For 29999/30002 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 17844 event pairs, 1022 based on Foata normal form. 5/3436 useless extension candidates. Maximal degree in co-relation 15340. Up to 3201 conditions per place. [2024-06-28 03:16:33,622 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 96 selfloop transitions, 39 changer transitions 0/142 dead transitions. [2024-06-28 03:16:33,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 142 transitions, 1313 flow [2024-06-28 03:16:33,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:33,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:33,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 03:16:33,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-28 03:16:33,624 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 782 flow. Second operand 8 states and 163 transitions. [2024-06-28 03:16:33,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 142 transitions, 1313 flow [2024-06-28 03:16:33,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 142 transitions, 1198 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:33,643 INFO L231 Difference]: Finished difference. Result has 90 places, 118 transitions, 973 flow [2024-06-28 03:16:33,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=973, PETRI_PLACES=90, PETRI_TRANSITIONS=118} [2024-06-28 03:16:33,644 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 45 predicate places. [2024-06-28 03:16:33,644 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 118 transitions, 973 flow [2024-06-28 03:16:33,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:33,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:33,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:33,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:16:33,645 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:33,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash -180326477, now seen corresponding path program 3 times [2024-06-28 03:16:33,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:33,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311285100] [2024-06-28 03:16:33,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:33,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:34,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:34,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311285100] [2024-06-28 03:16:34,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311285100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:34,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:34,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:34,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154157553] [2024-06-28 03:16:34,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:34,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:34,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:34,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:34,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:34,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:34,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 118 transitions, 973 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:34,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:34,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:34,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:35,159 INFO L124 PetriNetUnfolderBase]: 2250/3500 cut-off events. [2024-06-28 03:16:35,160 INFO L125 PetriNetUnfolderBase]: For 33604/33610 co-relation queries the response was YES. [2024-06-28 03:16:35,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15931 conditions, 3500 events. 2250/3500 cut-off events. For 33604/33610 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 17979 event pairs, 1020 based on Foata normal form. 6/3473 useless extension candidates. Maximal degree in co-relation 15894. Up to 3111 conditions per place. [2024-06-28 03:16:35,180 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 77 selfloop transitions, 72 changer transitions 0/156 dead transitions. [2024-06-28 03:16:35,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 156 transitions, 1564 flow [2024-06-28 03:16:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 169 transitions. [2024-06-28 03:16:35,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48011363636363635 [2024-06-28 03:16:35,201 INFO L175 Difference]: Start difference. First operand has 90 places, 118 transitions, 973 flow. Second operand 8 states and 169 transitions. [2024-06-28 03:16:35,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 156 transitions, 1564 flow [2024-06-28 03:16:35,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 156 transitions, 1483 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:35,228 INFO L231 Difference]: Finished difference. Result has 96 places, 129 transitions, 1205 flow [2024-06-28 03:16:35,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1205, PETRI_PLACES=96, PETRI_TRANSITIONS=129} [2024-06-28 03:16:35,230 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 51 predicate places. [2024-06-28 03:16:35,230 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 129 transitions, 1205 flow [2024-06-28 03:16:35,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:35,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:35,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:35,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:16:35,231 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:35,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash -180326291, now seen corresponding path program 1 times [2024-06-28 03:16:35,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:35,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918331994] [2024-06-28 03:16:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:35,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:36,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:36,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:36,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918331994] [2024-06-28 03:16:36,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918331994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:36,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:36,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:36,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687429799] [2024-06-28 03:16:36,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:36,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:36,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:36,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:36,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:36,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:36,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 129 transitions, 1205 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 03:16:36,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:36,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:36,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:36,879 INFO L124 PetriNetUnfolderBase]: 2397/3660 cut-off events. [2024-06-28 03:16:36,895 INFO L125 PetriNetUnfolderBase]: For 39626/39635 co-relation queries the response was YES. [2024-06-28 03:16:36,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17373 conditions, 3660 events. 2397/3660 cut-off events. For 39626/39635 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18351 event pairs, 1171 based on Foata normal form. 5/3643 useless extension candidates. Maximal degree in co-relation 17334. Up to 3406 conditions per place. [2024-06-28 03:16:36,917 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 115 selfloop transitions, 46 changer transitions 0/166 dead transitions. [2024-06-28 03:16:36,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 166 transitions, 1825 flow [2024-06-28 03:16:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:16:36,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:16:36,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 03:16:36,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 03:16:36,921 INFO L175 Difference]: Start difference. First operand has 96 places, 129 transitions, 1205 flow. Second operand 8 states and 162 transitions. [2024-06-28 03:16:36,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 166 transitions, 1825 flow [2024-06-28 03:16:36,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 166 transitions, 1734 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 03:16:36,953 INFO L231 Difference]: Finished difference. Result has 101 places, 139 transitions, 1359 flow [2024-06-28 03:16:36,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1359, PETRI_PLACES=101, PETRI_TRANSITIONS=139} [2024-06-28 03:16:36,954 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 56 predicate places. [2024-06-28 03:16:36,954 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 139 transitions, 1359 flow [2024-06-28 03:16:36,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 03:16:36,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:36,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:36,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:16:36,955 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:36,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:36,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1646553149, now seen corresponding path program 4 times [2024-06-28 03:16:36,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:36,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247912078] [2024-06-28 03:16:36,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:36,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:37,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:37,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247912078] [2024-06-28 03:16:37,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247912078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:37,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:37,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:37,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618758114] [2024-06-28 03:16:37,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:37,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:37,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:37,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:37,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:38,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:38,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 139 transitions, 1359 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:38,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:38,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:38,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:38,702 INFO L124 PetriNetUnfolderBase]: 2289/3549 cut-off events. [2024-06-28 03:16:38,702 INFO L125 PetriNetUnfolderBase]: For 45201/45211 co-relation queries the response was YES. [2024-06-28 03:16:38,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17475 conditions, 3549 events. 2289/3549 cut-off events. For 45201/45211 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 18241 event pairs, 1069 based on Foata normal form. 5/3506 useless extension candidates. Maximal degree in co-relation 17434. Up to 3235 conditions per place. [2024-06-28 03:16:38,723 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 105 selfloop transitions, 46 changer transitions 0/161 dead transitions. [2024-06-28 03:16:38,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 161 transitions, 1759 flow [2024-06-28 03:16:38,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:38,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-06-28 03:16:38,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2024-06-28 03:16:38,725 INFO L175 Difference]: Start difference. First operand has 101 places, 139 transitions, 1359 flow. Second operand 7 states and 144 transitions. [2024-06-28 03:16:38,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 161 transitions, 1759 flow [2024-06-28 03:16:38,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 161 transitions, 1662 flow, removed 39 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:38,758 INFO L231 Difference]: Finished difference. Result has 105 places, 139 transitions, 1380 flow [2024-06-28 03:16:38,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1380, PETRI_PLACES=105, PETRI_TRANSITIONS=139} [2024-06-28 03:16:38,759 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2024-06-28 03:16:38,759 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 139 transitions, 1380 flow [2024-06-28 03:16:38,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:38,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:38,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:38,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:16:38,760 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:38,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:38,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1646673119, now seen corresponding path program 5 times [2024-06-28 03:16:38,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:38,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703210310] [2024-06-28 03:16:38,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:38,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:39,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:39,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:39,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703210310] [2024-06-28 03:16:39,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703210310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:39,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:39,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:39,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318143016] [2024-06-28 03:16:39,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:39,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:39,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:39,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:39,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:39,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:39,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 139 transitions, 1380 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:39,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:39,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:39,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:40,237 INFO L124 PetriNetUnfolderBase]: 2286/3563 cut-off events. [2024-06-28 03:16:40,237 INFO L125 PetriNetUnfolderBase]: For 48687/48690 co-relation queries the response was YES. [2024-06-28 03:16:40,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17776 conditions, 3563 events. 2286/3563 cut-off events. For 48687/48690 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 18382 event pairs, 1014 based on Foata normal form. 5/3534 useless extension candidates. Maximal degree in co-relation 17733. Up to 3149 conditions per place. [2024-06-28 03:16:40,257 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 84 selfloop transitions, 75 changer transitions 0/169 dead transitions. [2024-06-28 03:16:40,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 169 transitions, 1969 flow [2024-06-28 03:16:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-06-28 03:16:40,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-28 03:16:40,259 INFO L175 Difference]: Start difference. First operand has 105 places, 139 transitions, 1380 flow. Second operand 7 states and 147 transitions. [2024-06-28 03:16:40,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 169 transitions, 1969 flow [2024-06-28 03:16:40,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 169 transitions, 1853 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:40,284 INFO L231 Difference]: Finished difference. Result has 105 places, 145 transitions, 1530 flow [2024-06-28 03:16:40,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1530, PETRI_PLACES=105, PETRI_TRANSITIONS=145} [2024-06-28 03:16:40,285 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 60 predicate places. [2024-06-28 03:16:40,285 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 145 transitions, 1530 flow [2024-06-28 03:16:40,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:40,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:40,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:40,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:16:40,286 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:40,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:40,286 INFO L85 PathProgramCache]: Analyzing trace with hash 94274861, now seen corresponding path program 2 times [2024-06-28 03:16:40,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:40,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095808073] [2024-06-28 03:16:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:40,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:41,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:41,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095808073] [2024-06-28 03:16:41,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095808073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:41,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:41,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:41,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979997451] [2024-06-28 03:16:41,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:41,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:41,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:41,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:41,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:41,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 145 transitions, 1530 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 03:16:41,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:41,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:41,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:41,713 INFO L124 PetriNetUnfolderBase]: 2425/3703 cut-off events. [2024-06-28 03:16:41,713 INFO L125 PetriNetUnfolderBase]: For 44321/44327 co-relation queries the response was YES. [2024-06-28 03:16:41,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18128 conditions, 3703 events. 2425/3703 cut-off events. For 44321/44327 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18521 event pairs, 1171 based on Foata normal form. 5/3686 useless extension candidates. Maximal degree in co-relation 18085. Up to 3441 conditions per place. [2024-06-28 03:16:41,735 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 119 selfloop transitions, 51 changer transitions 0/175 dead transitions. [2024-06-28 03:16:41,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 175 transitions, 2127 flow [2024-06-28 03:16:41,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 03:16:41,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-28 03:16:41,736 INFO L175 Difference]: Start difference. First operand has 105 places, 145 transitions, 1530 flow. Second operand 7 states and 141 transitions. [2024-06-28 03:16:41,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 175 transitions, 2127 flow [2024-06-28 03:16:41,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 175 transitions, 1932 flow, removed 42 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:41,770 INFO L231 Difference]: Finished difference. Result has 107 places, 151 transitions, 1541 flow [2024-06-28 03:16:41,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1339, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1541, PETRI_PLACES=107, PETRI_TRANSITIONS=151} [2024-06-28 03:16:41,771 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 62 predicate places. [2024-06-28 03:16:41,771 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 151 transitions, 1541 flow [2024-06-28 03:16:41,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 03:16:41,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:41,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:41,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:16:41,771 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:41,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:41,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1319751671, now seen corresponding path program 3 times [2024-06-28 03:16:41,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:41,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865126712] [2024-06-28 03:16:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:41,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:42,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:42,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865126712] [2024-06-28 03:16:42,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865126712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:42,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:42,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:42,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91349406] [2024-06-28 03:16:42,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:42,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:42,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:42,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:42,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:42,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:42,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 151 transitions, 1541 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 03:16:42,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:42,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:42,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:43,231 INFO L124 PetriNetUnfolderBase]: 2443/3740 cut-off events. [2024-06-28 03:16:43,231 INFO L125 PetriNetUnfolderBase]: For 44425/44425 co-relation queries the response was YES. [2024-06-28 03:16:43,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18179 conditions, 3740 events. 2443/3740 cut-off events. For 44425/44425 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18768 event pairs, 1242 based on Foata normal form. 3/3725 useless extension candidates. Maximal degree in co-relation 18136. Up to 3534 conditions per place. [2024-06-28 03:16:43,252 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 144 selfloop transitions, 29 changer transitions 0/178 dead transitions. [2024-06-28 03:16:43,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 178 transitions, 2135 flow [2024-06-28 03:16:43,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-06-28 03:16:43,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-28 03:16:43,253 INFO L175 Difference]: Start difference. First operand has 107 places, 151 transitions, 1541 flow. Second operand 7 states and 136 transitions. [2024-06-28 03:16:43,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 178 transitions, 2135 flow [2024-06-28 03:16:43,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 178 transitions, 1995 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 03:16:43,281 INFO L231 Difference]: Finished difference. Result has 109 places, 157 transitions, 1570 flow [2024-06-28 03:16:43,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1570, PETRI_PLACES=109, PETRI_TRANSITIONS=157} [2024-06-28 03:16:43,281 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 64 predicate places. [2024-06-28 03:16:43,281 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 157 transitions, 1570 flow [2024-06-28 03:16:43,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 03:16:43,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:43,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:43,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:16:43,282 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:43,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:43,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1823804639, now seen corresponding path program 6 times [2024-06-28 03:16:43,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:43,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920549829] [2024-06-28 03:16:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:43,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:44,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:44,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:44,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920549829] [2024-06-28 03:16:44,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920549829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:44,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:44,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:44,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911221090] [2024-06-28 03:16:44,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:44,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:44,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:44,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:44,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:44,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:44,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 157 transitions, 1570 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:44,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:44,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:44,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:44,729 INFO L124 PetriNetUnfolderBase]: 2324/3610 cut-off events. [2024-06-28 03:16:44,730 INFO L125 PetriNetUnfolderBase]: For 45883/45884 co-relation queries the response was YES. [2024-06-28 03:16:44,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17650 conditions, 3610 events. 2324/3610 cut-off events. For 45883/45884 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 18579 event pairs, 1163 based on Foata normal form. 3/3566 useless extension candidates. Maximal degree in co-relation 17607. Up to 3340 conditions per place. [2024-06-28 03:16:44,753 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 140 selfloop transitions, 21 changer transitions 0/175 dead transitions. [2024-06-28 03:16:44,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 175 transitions, 1978 flow [2024-06-28 03:16:44,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:44,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 03:16:44,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44805194805194803 [2024-06-28 03:16:44,755 INFO L175 Difference]: Start difference. First operand has 109 places, 157 transitions, 1570 flow. Second operand 7 states and 138 transitions. [2024-06-28 03:16:44,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 175 transitions, 1978 flow [2024-06-28 03:16:44,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 175 transitions, 1804 flow, removed 48 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:44,786 INFO L231 Difference]: Finished difference. Result has 110 places, 157 transitions, 1450 flow [2024-06-28 03:16:44,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1450, PETRI_PLACES=110, PETRI_TRANSITIONS=157} [2024-06-28 03:16:44,786 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2024-06-28 03:16:44,786 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 157 transitions, 1450 flow [2024-06-28 03:16:44,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:44,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:44,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:44,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:16:44,787 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:44,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:44,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1823811335, now seen corresponding path program 4 times [2024-06-28 03:16:44,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:44,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989068702] [2024-06-28 03:16:44,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:44,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:45,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:45,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:45,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989068702] [2024-06-28 03:16:45,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989068702] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:45,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:45,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:45,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158094347] [2024-06-28 03:16:45,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:45,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:45,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:45,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:45,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:45,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:45,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 157 transitions, 1450 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 03:16:45,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:45,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:45,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:46,192 INFO L124 PetriNetUnfolderBase]: 2427/3718 cut-off events. [2024-06-28 03:16:46,192 INFO L125 PetriNetUnfolderBase]: For 47012/47012 co-relation queries the response was YES. [2024-06-28 03:16:46,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17965 conditions, 3718 events. 2427/3718 cut-off events. For 47012/47012 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18737 event pairs, 1242 based on Foata normal form. 3/3703 useless extension candidates. Maximal degree in co-relation 17922. Up to 3540 conditions per place. [2024-06-28 03:16:46,209 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 152 selfloop transitions, 18 changer transitions 0/175 dead transitions. [2024-06-28 03:16:46,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 175 transitions, 1873 flow [2024-06-28 03:16:46,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:16:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:16:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-28 03:16:46,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:16:46,210 INFO L175 Difference]: Start difference. First operand has 110 places, 157 transitions, 1450 flow. Second operand 7 states and 132 transitions. [2024-06-28 03:16:46,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 175 transitions, 1873 flow [2024-06-28 03:16:46,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 175 transitions, 1705 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:46,237 INFO L231 Difference]: Finished difference. Result has 110 places, 157 transitions, 1329 flow [2024-06-28 03:16:46,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1329, PETRI_PLACES=110, PETRI_TRANSITIONS=157} [2024-06-28 03:16:46,238 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 65 predicate places. [2024-06-28 03:16:46,238 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 157 transitions, 1329 flow [2024-06-28 03:16:46,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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) [2024-06-28 03:16:46,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:46,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:46,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:16:46,239 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:46,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:46,239 INFO L85 PathProgramCache]: Analyzing trace with hash 751371355, now seen corresponding path program 1 times [2024-06-28 03:16:46,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:46,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179798432] [2024-06-28 03:16:46,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:46,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:46,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:46,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:46,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179798432] [2024-06-28 03:16:46,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179798432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:46,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:46,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:16:46,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193499303] [2024-06-28 03:16:46,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:46,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:16:46,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:46,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:16:46,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:16:46,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:46,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 157 transitions, 1329 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:46,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:46,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:46,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:47,438 INFO L124 PetriNetUnfolderBase]: 2505/3910 cut-off events. [2024-06-28 03:16:47,439 INFO L125 PetriNetUnfolderBase]: For 60579/60592 co-relation queries the response was YES. [2024-06-28 03:16:47,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19085 conditions, 3910 events. 2505/3910 cut-off events. For 60579/60592 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 20515 event pairs, 1400 based on Foata normal form. 2/3879 useless extension candidates. Maximal degree in co-relation 19042. Up to 3624 conditions per place. [2024-06-28 03:16:47,461 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 127 selfloop transitions, 9 changer transitions 0/167 dead transitions. [2024-06-28 03:16:47,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 167 transitions, 1651 flow [2024-06-28 03:16:47,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:16:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:16:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-28 03:16:47,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-28 03:16:47,462 INFO L175 Difference]: Start difference. First operand has 110 places, 157 transitions, 1329 flow. Second operand 5 states and 98 transitions. [2024-06-28 03:16:47,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 167 transitions, 1651 flow [2024-06-28 03:16:47,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 167 transitions, 1596 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:47,488 INFO L231 Difference]: Finished difference. Result has 109 places, 160 transitions, 1326 flow [2024-06-28 03:16:47,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1274, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1326, PETRI_PLACES=109, PETRI_TRANSITIONS=160} [2024-06-28 03:16:47,489 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 64 predicate places. [2024-06-28 03:16:47,489 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 160 transitions, 1326 flow [2024-06-28 03:16:47,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:47,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:47,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:47,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:16:47,491 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:47,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:47,492 INFO L85 PathProgramCache]: Analyzing trace with hash -98671320, now seen corresponding path program 1 times [2024-06-28 03:16:47,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:47,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488812404] [2024-06-28 03:16:47,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:47,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:48,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:48,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:48,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488812404] [2024-06-28 03:16:48,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488812404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:48,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:48,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:16:48,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099117900] [2024-06-28 03:16:48,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:48,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:16:48,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:48,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:16:48,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:16:48,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:48,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 160 transitions, 1326 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:48,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:48,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:48,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:48,990 INFO L124 PetriNetUnfolderBase]: 2410/3721 cut-off events. [2024-06-28 03:16:48,991 INFO L125 PetriNetUnfolderBase]: For 60174/60189 co-relation queries the response was YES. [2024-06-28 03:16:49,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19074 conditions, 3721 events. 2410/3721 cut-off events. For 60174/60189 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19180 event pairs, 1050 based on Foata normal form. 4/3681 useless extension candidates. Maximal degree in co-relation 19030. Up to 3321 conditions per place. [2024-06-28 03:16:49,012 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 136 selfloop transitions, 59 changer transitions 0/209 dead transitions. [2024-06-28 03:16:49,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 209 transitions, 2106 flow [2024-06-28 03:16:49,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:49,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:49,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-28 03:16:49,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 03:16:49,014 INFO L175 Difference]: Start difference. First operand has 109 places, 160 transitions, 1326 flow. Second operand 10 states and 205 transitions. [2024-06-28 03:16:49,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 209 transitions, 2106 flow [2024-06-28 03:16:49,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 209 transitions, 2076 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:49,043 INFO L231 Difference]: Finished difference. Result has 118 places, 175 transitions, 1629 flow [2024-06-28 03:16:49,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1296, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1629, PETRI_PLACES=118, PETRI_TRANSITIONS=175} [2024-06-28 03:16:49,043 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 73 predicate places. [2024-06-28 03:16:49,043 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 175 transitions, 1629 flow [2024-06-28 03:16:49,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:49,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:49,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:49,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:16:49,044 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:49,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash -286241539, now seen corresponding path program 1 times [2024-06-28 03:16:49,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:49,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985947754] [2024-06-28 03:16:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:49,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:49,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985947754] [2024-06-28 03:16:49,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985947754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:49,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:49,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:49,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070362912] [2024-06-28 03:16:49,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:49,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:49,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:49,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:49,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:49,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:49,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 175 transitions, 1629 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:49,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:49,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:49,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:50,840 INFO L124 PetriNetUnfolderBase]: 2510/3842 cut-off events. [2024-06-28 03:16:50,840 INFO L125 PetriNetUnfolderBase]: For 65957/65960 co-relation queries the response was YES. [2024-06-28 03:16:50,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20416 conditions, 3842 events. 2510/3842 cut-off events. For 65957/65960 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 19292 event pairs, 1097 based on Foata normal form. 4/3843 useless extension candidates. Maximal degree in co-relation 20369. Up to 3558 conditions per place. [2024-06-28 03:16:50,862 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 161 selfloop transitions, 57 changer transitions 0/223 dead transitions. [2024-06-28 03:16:50,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 223 transitions, 2471 flow [2024-06-28 03:16:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:16:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:16:50,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-28 03:16:50,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43388429752066116 [2024-06-28 03:16:50,863 INFO L175 Difference]: Start difference. First operand has 118 places, 175 transitions, 1629 flow. Second operand 11 states and 210 transitions. [2024-06-28 03:16:50,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 223 transitions, 2471 flow [2024-06-28 03:16:50,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 223 transitions, 2396 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 03:16:50,904 INFO L231 Difference]: Finished difference. Result has 127 places, 185 transitions, 1827 flow [2024-06-28 03:16:50,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1554, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1827, PETRI_PLACES=127, PETRI_TRANSITIONS=185} [2024-06-28 03:16:50,904 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 82 predicate places. [2024-06-28 03:16:50,905 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 185 transitions, 1827 flow [2024-06-28 03:16:50,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:50,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:50,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:50,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:16:50,905 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:50,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash -854501242, now seen corresponding path program 2 times [2024-06-28 03:16:50,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:50,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499483737] [2024-06-28 03:16:50,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:50,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:52,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:52,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:52,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499483737] [2024-06-28 03:16:52,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499483737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:52,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:52,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:52,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465769022] [2024-06-28 03:16:52,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:52,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:52,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:52,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:52,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:52,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:52,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 185 transitions, 1827 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:52,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:52,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:52,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:53,086 INFO L124 PetriNetUnfolderBase]: 2454/3816 cut-off events. [2024-06-28 03:16:53,087 INFO L125 PetriNetUnfolderBase]: For 74289/74292 co-relation queries the response was YES. [2024-06-28 03:16:53,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21223 conditions, 3816 events. 2454/3816 cut-off events. For 74289/74292 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 19720 event pairs, 990 based on Foata normal form. 5/3803 useless extension candidates. Maximal degree in co-relation 21173. Up to 3438 conditions per place. [2024-06-28 03:16:53,158 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 161 selfloop transitions, 54 changer transitions 0/232 dead transitions. [2024-06-28 03:16:53,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 232 transitions, 2534 flow [2024-06-28 03:16:53,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:16:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:16:53,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 03:16:53,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:16:53,160 INFO L175 Difference]: Start difference. First operand has 127 places, 185 transitions, 1827 flow. Second operand 10 states and 200 transitions. [2024-06-28 03:16:53,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 232 transitions, 2534 flow [2024-06-28 03:16:53,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 232 transitions, 2433 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:16:53,198 INFO L231 Difference]: Finished difference. Result has 132 places, 200 transitions, 2033 flow [2024-06-28 03:16:53,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2033, PETRI_PLACES=132, PETRI_TRANSITIONS=200} [2024-06-28 03:16:53,198 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 87 predicate places. [2024-06-28 03:16:53,199 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 200 transitions, 2033 flow [2024-06-28 03:16:53,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:53,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:53,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:53,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:16:53,199 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:53,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash -103953933, now seen corresponding path program 2 times [2024-06-28 03:16:53,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:53,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584454323] [2024-06-28 03:16:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:53,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:54,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:54,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:54,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584454323] [2024-06-28 03:16:54,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584454323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:54,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:54,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:54,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945839478] [2024-06-28 03:16:54,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:54,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:54,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:54,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:54,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:54,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:54,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 200 transitions, 2033 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:54,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:54,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:54,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:55,028 INFO L124 PetriNetUnfolderBase]: 2579/3955 cut-off events. [2024-06-28 03:16:55,028 INFO L125 PetriNetUnfolderBase]: For 80249/80252 co-relation queries the response was YES. [2024-06-28 03:16:55,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22362 conditions, 3955 events. 2579/3955 cut-off events. For 80249/80252 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 19959 event pairs, 1048 based on Foata normal form. 5/3958 useless extension candidates. Maximal degree in co-relation 22309. Up to 3696 conditions per place. [2024-06-28 03:16:55,059 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 183 selfloop transitions, 48 changer transitions 0/236 dead transitions. [2024-06-28 03:16:55,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 236 transitions, 2704 flow [2024-06-28 03:16:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:55,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:16:55,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 03:16:55,060 INFO L175 Difference]: Start difference. First operand has 132 places, 200 transitions, 2033 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:16:55,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 236 transitions, 2704 flow [2024-06-28 03:16:55,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 236 transitions, 2562 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:55,124 INFO L231 Difference]: Finished difference. Result has 134 places, 209 transitions, 2115 flow [2024-06-28 03:16:55,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2115, PETRI_PLACES=134, PETRI_TRANSITIONS=209} [2024-06-28 03:16:55,125 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 89 predicate places. [2024-06-28 03:16:55,125 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 209 transitions, 2115 flow [2024-06-28 03:16:55,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:55,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:55,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:55,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:16:55,126 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:55,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:55,126 INFO L85 PathProgramCache]: Analyzing trace with hash -103809938, now seen corresponding path program 3 times [2024-06-28 03:16:55,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:55,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785097390] [2024-06-28 03:16:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:55,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:56,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:56,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785097390] [2024-06-28 03:16:56,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785097390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:56,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:56,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:56,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688622959] [2024-06-28 03:16:56,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:56,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:56,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:56,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:56,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:56,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:16:56,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 209 transitions, 2115 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:56,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:56,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:16:56,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:57,219 INFO L124 PetriNetUnfolderBase]: 2494/3872 cut-off events. [2024-06-28 03:16:57,220 INFO L125 PetriNetUnfolderBase]: For 87694/87701 co-relation queries the response was YES. [2024-06-28 03:16:57,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22359 conditions, 3872 events. 2494/3872 cut-off events. For 87694/87701 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 19991 event pairs, 1000 based on Foata normal form. 8/3861 useless extension candidates. Maximal degree in co-relation 22305. Up to 3408 conditions per place. [2024-06-28 03:16:57,246 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 139 selfloop transitions, 81 changer transitions 0/240 dead transitions. [2024-06-28 03:16:57,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 240 transitions, 2755 flow [2024-06-28 03:16:57,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-28 03:16:57,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 03:16:57,248 INFO L175 Difference]: Start difference. First operand has 134 places, 209 transitions, 2115 flow. Second operand 9 states and 184 transitions. [2024-06-28 03:16:57,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 240 transitions, 2755 flow [2024-06-28 03:16:57,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 240 transitions, 2619 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:57,305 INFO L231 Difference]: Finished difference. Result has 136 places, 212 transitions, 2201 flow [2024-06-28 03:16:57,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2201, PETRI_PLACES=136, PETRI_TRANSITIONS=212} [2024-06-28 03:16:57,306 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 91 predicate places. [2024-06-28 03:16:57,306 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 212 transitions, 2201 flow [2024-06-28 03:16:57,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:57,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:57,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:57,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:16:57,307 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:57,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:57,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1295151873, now seen corresponding path program 3 times [2024-06-28 03:16:57,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:57,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356875121] [2024-06-28 03:16:57,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:57,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:58,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:58,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356875121] [2024-06-28 03:16:58,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356875121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:58,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:58,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:58,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364497850] [2024-06-28 03:16:58,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:58,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:58,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:58,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:58,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:58,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:58,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 212 transitions, 2201 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:58,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:58,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:58,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:16:59,003 INFO L124 PetriNetUnfolderBase]: 2627/4021 cut-off events. [2024-06-28 03:16:59,003 INFO L125 PetriNetUnfolderBase]: For 97212/97219 co-relation queries the response was YES. [2024-06-28 03:16:59,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23945 conditions, 4021 events. 2627/4021 cut-off events. For 97212/97219 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 20291 event pairs, 1060 based on Foata normal form. 6/4024 useless extension candidates. Maximal degree in co-relation 23890. Up to 3505 conditions per place. [2024-06-28 03:16:59,032 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 142 selfloop transitions, 112 changer transitions 0/259 dead transitions. [2024-06-28 03:16:59,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 259 transitions, 3302 flow [2024-06-28 03:16:59,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:16:59,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:16:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-28 03:16:59,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-28 03:16:59,034 INFO L175 Difference]: Start difference. First operand has 136 places, 212 transitions, 2201 flow. Second operand 9 states and 186 transitions. [2024-06-28 03:16:59,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 259 transitions, 3302 flow [2024-06-28 03:16:59,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 259 transitions, 3104 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:16:59,102 INFO L231 Difference]: Finished difference. Result has 139 places, 226 transitions, 2495 flow [2024-06-28 03:16:59,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2003, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2495, PETRI_PLACES=139, PETRI_TRANSITIONS=226} [2024-06-28 03:16:59,102 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 94 predicate places. [2024-06-28 03:16:59,103 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 226 transitions, 2495 flow [2024-06-28 03:16:59,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:59,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:16:59,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:16:59,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:16:59,104 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:16:59,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:16:59,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1295146076, now seen corresponding path program 1 times [2024-06-28 03:16:59,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:16:59,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131827123] [2024-06-28 03:16:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:16:59,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:16:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:16:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:16:59,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:16:59,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131827123] [2024-06-28 03:16:59,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131827123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:16:59,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:16:59,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:16:59,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780295066] [2024-06-28 03:16:59,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:16:59,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:16:59,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:16:59,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:16:59,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:16:59,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:16:59,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 226 transitions, 2495 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:16:59,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:16:59,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:16:59,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:00,747 INFO L124 PetriNetUnfolderBase]: 2669/4089 cut-off events. [2024-06-28 03:17:00,747 INFO L125 PetriNetUnfolderBase]: For 107927/107933 co-relation queries the response was YES. [2024-06-28 03:17:00,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25264 conditions, 4089 events. 2669/4089 cut-off events. For 107927/107933 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 20756 event pairs, 1073 based on Foata normal form. 6/4092 useless extension candidates. Maximal degree in co-relation 25207. Up to 3719 conditions per place. [2024-06-28 03:17:00,779 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 203 selfloop transitions, 64 changer transitions 0/272 dead transitions. [2024-06-28 03:17:00,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 272 transitions, 3499 flow [2024-06-28 03:17:00,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:00,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:00,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 184 transitions. [2024-06-28 03:17:00,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-28 03:17:00,780 INFO L175 Difference]: Start difference. First operand has 139 places, 226 transitions, 2495 flow. Second operand 9 states and 184 transitions. [2024-06-28 03:17:00,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 272 transitions, 3499 flow [2024-06-28 03:17:00,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 272 transitions, 3376 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:00,864 INFO L231 Difference]: Finished difference. Result has 147 places, 239 transitions, 2731 flow [2024-06-28 03:17:00,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2731, PETRI_PLACES=147, PETRI_TRANSITIONS=239} [2024-06-28 03:17:00,865 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 102 predicate places. [2024-06-28 03:17:00,865 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 239 transitions, 2731 flow [2024-06-28 03:17:00,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:00,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:00,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:00,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:17:00,866 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:00,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:00,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1295146293, now seen corresponding path program 4 times [2024-06-28 03:17:00,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:00,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809677009] [2024-06-28 03:17:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:00,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:01,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:01,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809677009] [2024-06-28 03:17:01,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809677009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:01,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:01,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:01,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020947541] [2024-06-28 03:17:01,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:01,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:01,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:01,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:01,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:01,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:01,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 239 transitions, 2731 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:01,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:01,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:01,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:02,789 INFO L124 PetriNetUnfolderBase]: 2664/4079 cut-off events. [2024-06-28 03:17:02,789 INFO L125 PetriNetUnfolderBase]: For 115220/115227 co-relation queries the response was YES. [2024-06-28 03:17:02,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26027 conditions, 4079 events. 2664/4079 cut-off events. For 115220/115227 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 20668 event pairs, 1021 based on Foata normal form. 6/4082 useless extension candidates. Maximal degree in co-relation 25966. Up to 3560 conditions per place. [2024-06-28 03:17:02,813 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 149 selfloop transitions, 116 changer transitions 0/270 dead transitions. [2024-06-28 03:17:02,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 270 transitions, 3573 flow [2024-06-28 03:17:02,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 03:17:02,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 03:17:02,815 INFO L175 Difference]: Start difference. First operand has 147 places, 239 transitions, 2731 flow. Second operand 9 states and 183 transitions. [2024-06-28 03:17:02,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 270 transitions, 3573 flow [2024-06-28 03:17:02,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 270 transitions, 3490 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:02,897 INFO L231 Difference]: Finished difference. Result has 153 places, 239 transitions, 2888 flow [2024-06-28 03:17:02,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2648, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2888, PETRI_PLACES=153, PETRI_TRANSITIONS=239} [2024-06-28 03:17:02,898 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 108 predicate places. [2024-06-28 03:17:02,898 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 239 transitions, 2888 flow [2024-06-28 03:17:02,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:02,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:02,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:02,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:17:02,899 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:02,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:02,899 INFO L85 PathProgramCache]: Analyzing trace with hash -496548680, now seen corresponding path program 4 times [2024-06-28 03:17:02,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:02,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527488164] [2024-06-28 03:17:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:02,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:03,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:03,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527488164] [2024-06-28 03:17:03,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527488164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:03,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:03,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:03,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350824672] [2024-06-28 03:17:03,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:03,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:03,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:03,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:04,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:04,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 239 transitions, 2888 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:04,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:04,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:04,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:04,892 INFO L124 PetriNetUnfolderBase]: 2576/3977 cut-off events. [2024-06-28 03:17:04,892 INFO L125 PetriNetUnfolderBase]: For 130328/130354 co-relation queries the response was YES. [2024-06-28 03:17:04,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26415 conditions, 3977 events. 2576/3977 cut-off events. For 130328/130354 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 20636 event pairs, 999 based on Foata normal form. 5/3949 useless extension candidates. Maximal degree in co-relation 26351. Up to 3515 conditions per place. [2024-06-28 03:17:04,923 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 171 selfloop transitions, 76 changer transitions 0/271 dead transitions. [2024-06-28 03:17:04,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 271 transitions, 3574 flow [2024-06-28 03:17:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:04,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 183 transitions. [2024-06-28 03:17:04,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 03:17:04,924 INFO L175 Difference]: Start difference. First operand has 153 places, 239 transitions, 2888 flow. Second operand 9 states and 183 transitions. [2024-06-28 03:17:04,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 271 transitions, 3574 flow [2024-06-28 03:17:05,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 271 transitions, 3369 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:05,030 INFO L231 Difference]: Finished difference. Result has 156 places, 239 transitions, 2867 flow [2024-06-28 03:17:05,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2867, PETRI_PLACES=156, PETRI_TRANSITIONS=239} [2024-06-28 03:17:05,035 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 111 predicate places. [2024-06-28 03:17:05,035 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 239 transitions, 2867 flow [2024-06-28 03:17:05,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:05,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:05,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:05,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:17:05,036 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:05,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:05,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1610291920, now seen corresponding path program 1 times [2024-06-28 03:17:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:05,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872416373] [2024-06-28 03:17:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:05,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:05,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:06,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:06,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872416373] [2024-06-28 03:17:06,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872416373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:06,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:06,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:06,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689011352] [2024-06-28 03:17:06,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:06,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:06,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:06,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:06,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:06,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:06,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 239 transitions, 2867 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:06,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:06,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:06,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:07,222 INFO L124 PetriNetUnfolderBase]: 2678/4108 cut-off events. [2024-06-28 03:17:07,222 INFO L125 PetriNetUnfolderBase]: For 131574/131577 co-relation queries the response was YES. [2024-06-28 03:17:07,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26883 conditions, 4108 events. 2678/4108 cut-off events. For 131574/131577 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 20869 event pairs, 1011 based on Foata normal form. 6/4112 useless extension candidates. Maximal degree in co-relation 26818. Up to 3815 conditions per place. [2024-06-28 03:17:07,253 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 217 selfloop transitions, 51 changer transitions 0/273 dead transitions. [2024-06-28 03:17:07,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 273 transitions, 3591 flow [2024-06-28 03:17:07,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:17:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:17:07,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:17:07,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340909090909091 [2024-06-28 03:17:07,255 INFO L175 Difference]: Start difference. First operand has 156 places, 239 transitions, 2867 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:17:07,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 273 transitions, 3591 flow [2024-06-28 03:17:07,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 273 transitions, 3451 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:07,374 INFO L231 Difference]: Finished difference. Result has 159 places, 242 transitions, 2891 flow [2024-06-28 03:17:07,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2727, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2891, PETRI_PLACES=159, PETRI_TRANSITIONS=242} [2024-06-28 03:17:07,375 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 114 predicate places. [2024-06-28 03:17:07,375 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 242 transitions, 2891 flow [2024-06-28 03:17:07,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:07,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:07,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:07,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:17:07,376 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:07,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:07,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1065235847, now seen corresponding path program 5 times [2024-06-28 03:17:07,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:07,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084001657] [2024-06-28 03:17:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:07,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:08,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:08,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:08,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084001657] [2024-06-28 03:17:08,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084001657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:08,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:08,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:08,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83226436] [2024-06-28 03:17:08,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:08,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:08,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:08,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:08,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:08,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:08,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 242 transitions, 2891 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:08,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:08,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:08,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:09,154 INFO L124 PetriNetUnfolderBase]: 2670/4087 cut-off events. [2024-06-28 03:17:09,154 INFO L125 PetriNetUnfolderBase]: For 132107/132110 co-relation queries the response was YES. [2024-06-28 03:17:09,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27034 conditions, 4087 events. 2670/4087 cut-off events. For 132107/132110 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 20713 event pairs, 1062 based on Foata normal form. 5/4089 useless extension candidates. Maximal degree in co-relation 26968. Up to 3785 conditions per place. [2024-06-28 03:17:09,189 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 199 selfloop transitions, 64 changer transitions 0/268 dead transitions. [2024-06-28 03:17:09,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 268 transitions, 3575 flow [2024-06-28 03:17:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:17:09,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4403409090909091 [2024-06-28 03:17:09,191 INFO L175 Difference]: Start difference. First operand has 159 places, 242 transitions, 2891 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:17:09,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 268 transitions, 3575 flow [2024-06-28 03:17:09,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 268 transitions, 3407 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:09,316 INFO L231 Difference]: Finished difference. Result has 160 places, 242 transitions, 2879 flow [2024-06-28 03:17:09,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2879, PETRI_PLACES=160, PETRI_TRANSITIONS=242} [2024-06-28 03:17:09,317 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 115 predicate places. [2024-06-28 03:17:09,318 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 242 transitions, 2879 flow [2024-06-28 03:17:09,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:09,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:09,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:09,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:17:09,318 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:09,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:09,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1068960714, now seen corresponding path program 2 times [2024-06-28 03:17:09,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:09,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286176699] [2024-06-28 03:17:09,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:09,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:10,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:10,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286176699] [2024-06-28 03:17:10,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286176699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:10,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:10,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:10,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046590298] [2024-06-28 03:17:10,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:10,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:10,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:10,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:10,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:10,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:10,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 242 transitions, 2879 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:10,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:10,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:10,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:10,972 INFO L124 PetriNetUnfolderBase]: 2743/4219 cut-off events. [2024-06-28 03:17:10,972 INFO L125 PetriNetUnfolderBase]: For 142885/142890 co-relation queries the response was YES. [2024-06-28 03:17:10,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28048 conditions, 4219 events. 2743/4219 cut-off events. For 142885/142890 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 21650 event pairs, 1202 based on Foata normal form. 6/4221 useless extension candidates. Maximal degree in co-relation 27981. Up to 3827 conditions per place. [2024-06-28 03:17:11,003 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 215 selfloop transitions, 68 changer transitions 0/288 dead transitions. [2024-06-28 03:17:11,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 288 transitions, 3968 flow [2024-06-28 03:17:11,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:11,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:17:11,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:17:11,004 INFO L175 Difference]: Start difference. First operand has 160 places, 242 transitions, 2879 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:17:11,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 288 transitions, 3968 flow [2024-06-28 03:17:11,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 288 transitions, 3828 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:11,104 INFO L231 Difference]: Finished difference. Result has 163 places, 259 transitions, 3168 flow [2024-06-28 03:17:11,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2747, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3168, PETRI_PLACES=163, PETRI_TRANSITIONS=259} [2024-06-28 03:17:11,104 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 118 predicate places. [2024-06-28 03:17:11,104 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 259 transitions, 3168 flow [2024-06-28 03:17:11,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:11,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:11,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:11,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:17:11,105 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:11,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:11,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1068960497, now seen corresponding path program 6 times [2024-06-28 03:17:11,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:11,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247803761] [2024-06-28 03:17:11,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:11,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:11,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:11,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247803761] [2024-06-28 03:17:11,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247803761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:11,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:11,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:11,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268187581] [2024-06-28 03:17:11,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:11,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:11,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:11,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:11,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:12,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:12,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 259 transitions, 3168 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:12,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:12,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:12,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:12,842 INFO L124 PetriNetUnfolderBase]: 2787/4273 cut-off events. [2024-06-28 03:17:12,842 INFO L125 PetriNetUnfolderBase]: For 138743/138750 co-relation queries the response was YES. [2024-06-28 03:17:12,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28773 conditions, 4273 events. 2787/4273 cut-off events. For 138743/138750 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 21843 event pairs, 1023 based on Foata normal form. 7/4277 useless extension candidates. Maximal degree in co-relation 28705. Up to 3721 conditions per place. [2024-06-28 03:17:12,880 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 168 selfloop transitions, 131 changer transitions 0/304 dead transitions. [2024-06-28 03:17:12,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 304 transitions, 4456 flow [2024-06-28 03:17:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 03:17:12,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-28 03:17:12,882 INFO L175 Difference]: Start difference. First operand has 163 places, 259 transitions, 3168 flow. Second operand 8 states and 163 transitions. [2024-06-28 03:17:12,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 304 transitions, 4456 flow [2024-06-28 03:17:13,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 304 transitions, 4291 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:13,007 INFO L231 Difference]: Finished difference. Result has 166 places, 271 transitions, 3508 flow [2024-06-28 03:17:13,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3508, PETRI_PLACES=166, PETRI_TRANSITIONS=271} [2024-06-28 03:17:13,007 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 121 predicate places. [2024-06-28 03:17:13,007 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 271 transitions, 3508 flow [2024-06-28 03:17:13,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:13,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:13,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:13,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:17:13,008 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:13,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:13,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1068954762, now seen corresponding path program 5 times [2024-06-28 03:17:13,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:13,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860326551] [2024-06-28 03:17:13,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:13,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:14,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:14,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860326551] [2024-06-28 03:17:14,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860326551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:14,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:14,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:14,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467057768] [2024-06-28 03:17:14,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:14,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:14,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:14,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:14,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:14,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:14,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 271 transitions, 3508 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:14,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:14,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:14,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:15,058 INFO L124 PetriNetUnfolderBase]: 2684/4172 cut-off events. [2024-06-28 03:17:15,058 INFO L125 PetriNetUnfolderBase]: For 148903/148910 co-relation queries the response was YES. [2024-06-28 03:17:15,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29019 conditions, 4172 events. 2684/4172 cut-off events. For 148903/148910 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 21800 event pairs, 965 based on Foata normal form. 8/4161 useless extension candidates. Maximal degree in co-relation 28950. Up to 3655 conditions per place. [2024-06-28 03:17:15,096 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 190 selfloop transitions, 81 changer transitions 0/300 dead transitions. [2024-06-28 03:17:15,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 300 transitions, 4297 flow [2024-06-28 03:17:15,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:15,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2024-06-28 03:17:15,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630681818181818 [2024-06-28 03:17:15,098 INFO L175 Difference]: Start difference. First operand has 166 places, 271 transitions, 3508 flow. Second operand 8 states and 163 transitions. [2024-06-28 03:17:15,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 300 transitions, 4297 flow [2024-06-28 03:17:15,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 300 transitions, 4037 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:15,240 INFO L231 Difference]: Finished difference. Result has 169 places, 274 transitions, 3487 flow [2024-06-28 03:17:15,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3487, PETRI_PLACES=169, PETRI_TRANSITIONS=274} [2024-06-28 03:17:15,240 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 124 predicate places. [2024-06-28 03:17:15,240 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 274 transitions, 3487 flow [2024-06-28 03:17:15,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:15,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:15,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:15,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:17:15,241 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:15,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:15,241 INFO L85 PathProgramCache]: Analyzing trace with hash -492739245, now seen corresponding path program 7 times [2024-06-28 03:17:15,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:15,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351941449] [2024-06-28 03:17:15,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:15,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:16,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:16,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:16,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351941449] [2024-06-28 03:17:16,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351941449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:16,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:16,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:16,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628552694] [2024-06-28 03:17:16,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:16,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:16,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:16,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:16,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:16,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:16,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 274 transitions, 3487 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:16,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:16,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:16,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:16,806 INFO L124 PetriNetUnfolderBase]: 2790/4278 cut-off events. [2024-06-28 03:17:16,806 INFO L125 PetriNetUnfolderBase]: For 148050/148057 co-relation queries the response was YES. [2024-06-28 03:17:16,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29496 conditions, 4278 events. 2790/4278 cut-off events. For 148050/148057 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 21846 event pairs, 1023 based on Foata normal form. 7/4282 useless extension candidates. Maximal degree in co-relation 29427. Up to 3729 conditions per place. [2024-06-28 03:17:16,844 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 175 selfloop transitions, 125 changer transitions 0/305 dead transitions. [2024-06-28 03:17:16,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 305 transitions, 4449 flow [2024-06-28 03:17:16,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:16,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:16,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-28 03:17:16,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 03:17:16,845 INFO L175 Difference]: Start difference. First operand has 169 places, 274 transitions, 3487 flow. Second operand 8 states and 162 transitions. [2024-06-28 03:17:16,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 305 transitions, 4449 flow [2024-06-28 03:17:16,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 305 transitions, 4206 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:16,992 INFO L231 Difference]: Finished difference. Result has 171 places, 274 transitions, 3510 flow [2024-06-28 03:17:16,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3510, PETRI_PLACES=171, PETRI_TRANSITIONS=274} [2024-06-28 03:17:16,993 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 126 predicate places. [2024-06-28 03:17:16,993 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 274 transitions, 3510 flow [2024-06-28 03:17:16,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:16,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:16,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:16,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:17:16,993 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:16,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:16,994 INFO L85 PathProgramCache]: Analyzing trace with hash 708798090, now seen corresponding path program 3 times [2024-06-28 03:17:16,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:16,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081628444] [2024-06-28 03:17:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:16,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:17,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:17,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:17,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081628444] [2024-06-28 03:17:17,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081628444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:17,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:17,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:17,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694057583] [2024-06-28 03:17:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:17,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:17,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:17,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:17,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:17,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:17,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 274 transitions, 3510 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:17,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:17,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:17,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:18,634 INFO L124 PetriNetUnfolderBase]: 2826/4340 cut-off events. [2024-06-28 03:17:18,634 INFO L125 PetriNetUnfolderBase]: For 158507/158509 co-relation queries the response was YES. [2024-06-28 03:17:18,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30278 conditions, 4340 events. 2826/4340 cut-off events. For 158507/158509 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 22276 event pairs, 1200 based on Foata normal form. 6/4343 useless extension candidates. Maximal degree in co-relation 30208. Up to 4013 conditions per place. [2024-06-28 03:17:18,674 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 264 selfloop transitions, 45 changer transitions 0/314 dead transitions. [2024-06-28 03:17:18,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 314 transitions, 4627 flow [2024-06-28 03:17:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:18,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:18,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 03:17:18,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-28 03:17:18,678 INFO L175 Difference]: Start difference. First operand has 171 places, 274 transitions, 3510 flow. Second operand 8 states and 157 transitions. [2024-06-28 03:17:18,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 314 transitions, 4627 flow [2024-06-28 03:17:18,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 314 transitions, 4305 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:17:18,796 INFO L231 Difference]: Finished difference. Result has 171 places, 282 transitions, 3456 flow [2024-06-28 03:17:18,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3192, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3456, PETRI_PLACES=171, PETRI_TRANSITIONS=282} [2024-06-28 03:17:18,797 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 126 predicate places. [2024-06-28 03:17:18,797 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 282 transitions, 3456 flow [2024-06-28 03:17:18,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:18,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:18,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:18,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:17:18,798 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:18,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:18,798 INFO L85 PathProgramCache]: Analyzing trace with hash 703370424, now seen corresponding path program 6 times [2024-06-28 03:17:18,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:18,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163670820] [2024-06-28 03:17:18,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:18,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:19,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:19,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163670820] [2024-06-28 03:17:19,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163670820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:19,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:19,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:19,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473333842] [2024-06-28 03:17:19,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:19,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:19,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:19,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:19,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:19,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:19,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 282 transitions, 3456 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:19,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:19,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:19,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:20,511 INFO L124 PetriNetUnfolderBase]: 2703/4209 cut-off events. [2024-06-28 03:17:20,511 INFO L125 PetriNetUnfolderBase]: For 159187/159194 co-relation queries the response was YES. [2024-06-28 03:17:20,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29451 conditions, 4209 events. 2703/4209 cut-off events. For 159187/159194 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 22172 event pairs, 1132 based on Foata normal form. 3/4189 useless extension candidates. Maximal degree in co-relation 29381. Up to 3849 conditions per place. [2024-06-28 03:17:20,547 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 254 selfloop transitions, 24 changer transitions 0/307 dead transitions. [2024-06-28 03:17:20,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 307 transitions, 4219 flow [2024-06-28 03:17:20,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:20,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:17:20,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:17:20,548 INFO L175 Difference]: Start difference. First operand has 171 places, 282 transitions, 3456 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:17:20,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 307 transitions, 4219 flow [2024-06-28 03:17:20,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 307 transitions, 4009 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-28 03:17:20,668 INFO L231 Difference]: Finished difference. Result has 174 places, 285 transitions, 3373 flow [2024-06-28 03:17:20,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3246, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3373, PETRI_PLACES=174, PETRI_TRANSITIONS=285} [2024-06-28 03:17:20,669 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 129 predicate places. [2024-06-28 03:17:20,669 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 285 transitions, 3373 flow [2024-06-28 03:17:20,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:20,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:20,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:20,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:17:20,670 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:20,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash 703376159, now seen corresponding path program 8 times [2024-06-28 03:17:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558099830] [2024-06-28 03:17:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:21,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:21,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:21,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558099830] [2024-06-28 03:17:21,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558099830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:21,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:21,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:21,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606222919] [2024-06-28 03:17:21,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:21,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:21,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:21,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:21,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:21,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:21,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 285 transitions, 3373 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:21,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:21,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:21,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:22,242 INFO L124 PetriNetUnfolderBase]: 2865/4398 cut-off events. [2024-06-28 03:17:22,243 INFO L125 PetriNetUnfolderBase]: For 167316/167318 co-relation queries the response was YES. [2024-06-28 03:17:22,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30856 conditions, 4398 events. 2865/4398 cut-off events. For 167316/167318 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 22629 event pairs, 1200 based on Foata normal form. 3/4398 useless extension candidates. Maximal degree in co-relation 30784. Up to 4086 conditions per place. [2024-06-28 03:17:22,278 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 273 selfloop transitions, 49 changer transitions 0/327 dead transitions. [2024-06-28 03:17:22,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 327 transitions, 4717 flow [2024-06-28 03:17:22,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 03:17:22,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4460227272727273 [2024-06-28 03:17:22,280 INFO L175 Difference]: Start difference. First operand has 174 places, 285 transitions, 3373 flow. Second operand 8 states and 157 transitions. [2024-06-28 03:17:22,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 327 transitions, 4717 flow [2024-06-28 03:17:22,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 327 transitions, 4616 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:22,418 INFO L231 Difference]: Finished difference. Result has 176 places, 297 transitions, 3620 flow [2024-06-28 03:17:22,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3272, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3620, PETRI_PLACES=176, PETRI_TRANSITIONS=297} [2024-06-28 03:17:22,418 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 131 predicate places. [2024-06-28 03:17:22,419 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 297 transitions, 3620 flow [2024-06-28 03:17:22,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:22,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:22,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:22,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:17:22,419 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:22,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash 710994936, now seen corresponding path program 4 times [2024-06-28 03:17:22,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:22,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743079378] [2024-06-28 03:17:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:22,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:23,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:23,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743079378] [2024-06-28 03:17:23,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743079378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:23,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:23,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:23,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608671932] [2024-06-28 03:17:23,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:23,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:23,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:23,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:23,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:23,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 297 transitions, 3620 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:23,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:23,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:23,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:24,138 INFO L124 PetriNetUnfolderBase]: 2901/4456 cut-off events. [2024-06-28 03:17:24,138 INFO L125 PetriNetUnfolderBase]: For 179199/179201 co-relation queries the response was YES. [2024-06-28 03:17:24,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31590 conditions, 4456 events. 2901/4456 cut-off events. For 179199/179201 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 23030 event pairs, 1202 based on Foata normal form. 6/4459 useless extension candidates. Maximal degree in co-relation 31517. Up to 4202 conditions per place. [2024-06-28 03:17:24,174 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 302 selfloop transitions, 23 changer transitions 0/330 dead transitions. [2024-06-28 03:17:24,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 330 transitions, 4592 flow [2024-06-28 03:17:24,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:17:24,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-28 03:17:24,175 INFO L175 Difference]: Start difference. First operand has 176 places, 297 transitions, 3620 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:17:24,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 330 transitions, 4592 flow [2024-06-28 03:17:24,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 330 transitions, 4315 flow, removed 62 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:24,296 INFO L231 Difference]: Finished difference. Result has 178 places, 305 transitions, 3572 flow [2024-06-28 03:17:24,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3572, PETRI_PLACES=178, PETRI_TRANSITIONS=305} [2024-06-28 03:17:24,297 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 133 predicate places. [2024-06-28 03:17:24,297 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 305 transitions, 3572 flow [2024-06-28 03:17:24,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:24,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:24,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:24,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:17:24,298 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:24,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:24,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1165791733, now seen corresponding path program 9 times [2024-06-28 03:17:24,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:24,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568524477] [2024-06-28 03:17:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:24,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:25,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:25,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568524477] [2024-06-28 03:17:25,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568524477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:25,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:25,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:25,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333139363] [2024-06-28 03:17:25,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:25,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:25,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:25,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:25,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:25,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:25,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 305 transitions, 3572 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:25,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:25,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:25,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:25,936 INFO L124 PetriNetUnfolderBase]: 2893/4445 cut-off events. [2024-06-28 03:17:25,936 INFO L125 PetriNetUnfolderBase]: For 183711/183713 co-relation queries the response was YES. [2024-06-28 03:17:25,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31396 conditions, 4445 events. 2893/4445 cut-off events. For 183711/183713 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 22970 event pairs, 1202 based on Foata normal form. 3/4445 useless extension candidates. Maximal degree in co-relation 31323. Up to 4200 conditions per place. [2024-06-28 03:17:25,978 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 298 selfloop transitions, 24 changer transitions 0/327 dead transitions. [2024-06-28 03:17:25,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 327 transitions, 4362 flow [2024-06-28 03:17:25,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:17:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:17:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:17:25,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-06-28 03:17:25,979 INFO L175 Difference]: Start difference. First operand has 178 places, 305 transitions, 3572 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:17:25,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 327 transitions, 4362 flow [2024-06-28 03:17:26,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 327 transitions, 4173 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:26,143 INFO L231 Difference]: Finished difference. Result has 180 places, 305 transitions, 3443 flow [2024-06-28 03:17:26,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3383, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3443, PETRI_PLACES=180, PETRI_TRANSITIONS=305} [2024-06-28 03:17:26,144 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 135 predicate places. [2024-06-28 03:17:26,144 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 305 transitions, 3443 flow [2024-06-28 03:17:26,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:26,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:26,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:26,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:17:26,145 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:26,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:26,145 INFO L85 PathProgramCache]: Analyzing trace with hash 710728026, now seen corresponding path program 5 times [2024-06-28 03:17:26,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:26,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627383139] [2024-06-28 03:17:26,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:26,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:26,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:26,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:26,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627383139] [2024-06-28 03:17:26,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627383139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:26,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:26,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:26,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16106035] [2024-06-28 03:17:26,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:26,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:26,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:26,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:26,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:27,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:27,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 305 transitions, 3443 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:27,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:27,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:27,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:27,816 INFO L124 PetriNetUnfolderBase]: 2877/4423 cut-off events. [2024-06-28 03:17:27,816 INFO L125 PetriNetUnfolderBase]: For 190275/190277 co-relation queries the response was YES. [2024-06-28 03:17:27,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31153 conditions, 4423 events. 2877/4423 cut-off events. For 190275/190277 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22863 event pairs, 1199 based on Foata normal form. 6/4426 useless extension candidates. Maximal degree in co-relation 31079. Up to 4130 conditions per place. [2024-06-28 03:17:27,857 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 292 selfloop transitions, 37 changer transitions 0/334 dead transitions. [2024-06-28 03:17:27,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 334 transitions, 4308 flow [2024-06-28 03:17:27,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:27,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 03:17:27,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-28 03:17:27,859 INFO L175 Difference]: Start difference. First operand has 180 places, 305 transitions, 3443 flow. Second operand 9 states and 164 transitions. [2024-06-28 03:17:27,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 334 transitions, 4308 flow [2024-06-28 03:17:28,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 334 transitions, 4158 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:28,019 INFO L231 Difference]: Finished difference. Result has 182 places, 305 transitions, 3381 flow [2024-06-28 03:17:28,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3293, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3381, PETRI_PLACES=182, PETRI_TRANSITIONS=305} [2024-06-28 03:17:28,023 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 137 predicate places. [2024-06-28 03:17:28,023 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 305 transitions, 3381 flow [2024-06-28 03:17:28,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:28,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:28,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:28,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:17:28,024 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:28,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:28,024 INFO L85 PathProgramCache]: Analyzing trace with hash 703370579, now seen corresponding path program 10 times [2024-06-28 03:17:28,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:28,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253068038] [2024-06-28 03:17:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:28,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:28,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:28,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253068038] [2024-06-28 03:17:28,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253068038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:28,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:28,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:28,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23498939] [2024-06-28 03:17:28,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:28,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:28,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:28,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:28,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:28,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:28,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 305 transitions, 3381 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:28,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:28,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:28,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:29,650 INFO L124 PetriNetUnfolderBase]: 2869/4412 cut-off events. [2024-06-28 03:17:29,651 INFO L125 PetriNetUnfolderBase]: For 195962/195964 co-relation queries the response was YES. [2024-06-28 03:17:29,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31249 conditions, 4412 events. 2869/4412 cut-off events. For 195962/195964 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 22756 event pairs, 1199 based on Foata normal form. 3/4412 useless extension candidates. Maximal degree in co-relation 31174. Up to 4100 conditions per place. [2024-06-28 03:17:29,687 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 272 selfloop transitions, 52 changer transitions 0/329 dead transitions. [2024-06-28 03:17:29,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 329 transitions, 4215 flow [2024-06-28 03:17:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:17:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:17:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 03:17:29,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-28 03:17:29,688 INFO L175 Difference]: Start difference. First operand has 182 places, 305 transitions, 3381 flow. Second operand 9 states and 163 transitions. [2024-06-28 03:17:29,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 329 transitions, 4215 flow [2024-06-28 03:17:29,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 329 transitions, 4014 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-28 03:17:29,854 INFO L231 Difference]: Finished difference. Result has 181 places, 305 transitions, 3296 flow [2024-06-28 03:17:29,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3180, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3296, PETRI_PLACES=181, PETRI_TRANSITIONS=305} [2024-06-28 03:17:29,854 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 136 predicate places. [2024-06-28 03:17:29,855 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 305 transitions, 3296 flow [2024-06-28 03:17:29,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:29,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:29,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:29,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:17:29,855 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:29,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:29,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1865044211, now seen corresponding path program 1 times [2024-06-28 03:17:29,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:29,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009048637] [2024-06-28 03:17:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:29,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:30,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:30,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009048637] [2024-06-28 03:17:30,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009048637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:30,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:30,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:17:30,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866943312] [2024-06-28 03:17:30,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:30,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:17:30,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:30,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:17:30,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:17:30,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:30,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 305 transitions, 3296 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:30,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:30,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:30,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:31,378 INFO L124 PetriNetUnfolderBase]: 3238/4963 cut-off events. [2024-06-28 03:17:31,379 INFO L125 PetriNetUnfolderBase]: For 268205/268228 co-relation queries the response was YES. [2024-06-28 03:17:31,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36212 conditions, 4963 events. 3238/4963 cut-off events. For 268205/268228 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 25925 event pairs, 1546 based on Foata normal form. 7/4942 useless extension candidates. Maximal degree in co-relation 36138. Up to 4620 conditions per place. [2024-06-28 03:17:31,423 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 240 selfloop transitions, 12 changer transitions 0/316 dead transitions. [2024-06-28 03:17:31,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 316 transitions, 3864 flow [2024-06-28 03:17:31,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:17:31,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:17:31,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 03:17:31,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 03:17:31,424 INFO L175 Difference]: Start difference. First operand has 181 places, 305 transitions, 3296 flow. Second operand 6 states and 108 transitions. [2024-06-28 03:17:31,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 316 transitions, 3864 flow [2024-06-28 03:17:31,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 316 transitions, 3679 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:31,593 INFO L231 Difference]: Finished difference. Result has 178 places, 308 transitions, 3173 flow [2024-06-28 03:17:31,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3111, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3173, PETRI_PLACES=178, PETRI_TRANSITIONS=308} [2024-06-28 03:17:31,594 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 133 predicate places. [2024-06-28 03:17:31,594 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 308 transitions, 3173 flow [2024-06-28 03:17:31,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:31,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:31,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:31,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:17:31,595 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:31,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:31,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1983693552, now seen corresponding path program 1 times [2024-06-28 03:17:31,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:31,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140834027] [2024-06-28 03:17:31,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:31,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:32,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:32,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140834027] [2024-06-28 03:17:32,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140834027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:32,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:32,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:32,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135370729] [2024-06-28 03:17:32,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:32,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:32,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:32,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:32,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:32,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 308 transitions, 3173 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:32,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:32,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:32,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:33,343 INFO L124 PetriNetUnfolderBase]: 2966/4571 cut-off events. [2024-06-28 03:17:33,344 INFO L125 PetriNetUnfolderBase]: For 253584/253640 co-relation queries the response was YES. [2024-06-28 03:17:33,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34689 conditions, 4571 events. 2966/4571 cut-off events. For 253584/253640 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 24357 event pairs, 869 based on Foata normal form. 10/4528 useless extension candidates. Maximal degree in co-relation 34614. Up to 3908 conditions per place. [2024-06-28 03:17:33,388 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 246 selfloop transitions, 77 changer transitions 0/357 dead transitions. [2024-06-28 03:17:33,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 357 transitions, 4419 flow [2024-06-28 03:17:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:17:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:17:33,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2024-06-28 03:17:33,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-28 03:17:33,395 INFO L175 Difference]: Start difference. First operand has 178 places, 308 transitions, 3173 flow. Second operand 10 states and 206 transitions. [2024-06-28 03:17:33,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 357 transitions, 4419 flow [2024-06-28 03:17:33,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 357 transitions, 4379 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:17:33,600 INFO L231 Difference]: Finished difference. Result has 186 places, 317 transitions, 3513 flow [2024-06-28 03:17:33,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3513, PETRI_PLACES=186, PETRI_TRANSITIONS=317} [2024-06-28 03:17:33,602 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 141 predicate places. [2024-06-28 03:17:33,602 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 317 transitions, 3513 flow [2024-06-28 03:17:33,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:33,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:33,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:33,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:17:33,602 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:33,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:33,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1495000750, now seen corresponding path program 2 times [2024-06-28 03:17:33,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:33,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193421333] [2024-06-28 03:17:33,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:33,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:34,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:34,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:34,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193421333] [2024-06-28 03:17:34,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193421333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:34,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:34,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:34,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784424651] [2024-06-28 03:17:34,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:34,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:34,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:34,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:34,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:34,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:34,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 317 transitions, 3513 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:34,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:34,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:34,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:35,890 INFO L124 PetriNetUnfolderBase]: 3135/4815 cut-off events. [2024-06-28 03:17:35,890 INFO L125 PetriNetUnfolderBase]: For 258431/258438 co-relation queries the response was YES. [2024-06-28 03:17:35,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36537 conditions, 4815 events. 3135/4815 cut-off events. For 258431/258438 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 25333 event pairs, 1015 based on Foata normal form. 8/4816 useless extension candidates. Maximal degree in co-relation 36459. Up to 3872 conditions per place. [2024-06-28 03:17:35,935 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 215 selfloop transitions, 155 changer transitions 0/376 dead transitions. [2024-06-28 03:17:35,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 376 transitions, 5291 flow [2024-06-28 03:17:35,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:17:35,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:17:35,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 214 transitions. [2024-06-28 03:17:35,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863636363636364 [2024-06-28 03:17:35,940 INFO L175 Difference]: Start difference. First operand has 186 places, 317 transitions, 3513 flow. Second operand 10 states and 214 transitions. [2024-06-28 03:17:35,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 376 transitions, 5291 flow [2024-06-28 03:17:36,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 376 transitions, 5091 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:36,226 INFO L231 Difference]: Finished difference. Result has 191 places, 333 transitions, 4010 flow [2024-06-28 03:17:36,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4010, PETRI_PLACES=191, PETRI_TRANSITIONS=333} [2024-06-28 03:17:36,227 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 146 predicate places. [2024-06-28 03:17:36,227 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 333 transitions, 4010 flow [2024-06-28 03:17:36,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:36,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:36,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:17:36,227 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:36,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1194917414, now seen corresponding path program 2 times [2024-06-28 03:17:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:36,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391837612] [2024-06-28 03:17:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:36,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:37,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:37,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:37,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391837612] [2024-06-28 03:17:37,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391837612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:37,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:37,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:37,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130113489] [2024-06-28 03:17:37,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:37,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:37,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:37,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:37,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:37,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:37,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 333 transitions, 4010 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:37,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:37,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:37,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:38,332 INFO L124 PetriNetUnfolderBase]: 3103/4836 cut-off events. [2024-06-28 03:17:38,333 INFO L125 PetriNetUnfolderBase]: For 286978/287014 co-relation queries the response was YES. [2024-06-28 03:17:38,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38542 conditions, 4836 events. 3103/4836 cut-off events. For 286978/287014 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 26367 event pairs, 1032 based on Foata normal form. 12/4825 useless extension candidates. Maximal degree in co-relation 38462. Up to 4162 conditions per place. [2024-06-28 03:17:38,373 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 267 selfloop transitions, 88 changer transitions 0/389 dead transitions. [2024-06-28 03:17:38,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 389 transitions, 5264 flow [2024-06-28 03:17:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 225 transitions. [2024-06-28 03:17:38,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46487603305785125 [2024-06-28 03:17:38,375 INFO L175 Difference]: Start difference. First operand has 191 places, 333 transitions, 4010 flow. Second operand 11 states and 225 transitions. [2024-06-28 03:17:38,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 389 transitions, 5264 flow [2024-06-28 03:17:38,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 389 transitions, 5143 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-28 03:17:38,575 INFO L231 Difference]: Finished difference. Result has 200 places, 347 transitions, 4325 flow [2024-06-28 03:17:38,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=3905, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4325, PETRI_PLACES=200, PETRI_TRANSITIONS=347} [2024-06-28 03:17:38,576 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 155 predicate places. [2024-06-28 03:17:38,576 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 347 transitions, 4325 flow [2024-06-28 03:17:38,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:38,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:38,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:38,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:17:38,579 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:38,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1236199844, now seen corresponding path program 1 times [2024-06-28 03:17:38,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:38,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868000487] [2024-06-28 03:17:38,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:38,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:38,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:39,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:39,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868000487] [2024-06-28 03:17:39,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868000487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:39,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:39,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:39,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956062590] [2024-06-28 03:17:39,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:39,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:39,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:39,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:39,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:39,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:39,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 347 transitions, 4325 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:39,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:39,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:39,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:40,661 INFO L124 PetriNetUnfolderBase]: 3281/5034 cut-off events. [2024-06-28 03:17:40,661 INFO L125 PetriNetUnfolderBase]: For 293340/293343 co-relation queries the response was YES. [2024-06-28 03:17:40,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39862 conditions, 5034 events. 3281/5034 cut-off events. For 293340/293343 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 26766 event pairs, 1076 based on Foata normal form. 4/5030 useless extension candidates. Maximal degree in co-relation 39779. Up to 4495 conditions per place. [2024-06-28 03:17:40,711 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 299 selfloop transitions, 90 changer transitions 0/395 dead transitions. [2024-06-28 03:17:40,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 395 transitions, 5711 flow [2024-06-28 03:17:40,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:40,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-28 03:17:40,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462809917355372 [2024-06-28 03:17:40,713 INFO L175 Difference]: Start difference. First operand has 200 places, 347 transitions, 4325 flow. Second operand 11 states and 216 transitions. [2024-06-28 03:17:40,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 395 transitions, 5711 flow [2024-06-28 03:17:40,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 395 transitions, 5554 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:40,960 INFO L231 Difference]: Finished difference. Result has 205 places, 357 transitions, 4594 flow [2024-06-28 03:17:40,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4594, PETRI_PLACES=205, PETRI_TRANSITIONS=357} [2024-06-28 03:17:40,961 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 160 predicate places. [2024-06-28 03:17:40,961 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 357 transitions, 4594 flow [2024-06-28 03:17:40,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:40,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:40,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:40,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:17:40,962 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:40,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:40,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1236196000, now seen corresponding path program 3 times [2024-06-28 03:17:40,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:40,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574366019] [2024-06-28 03:17:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:40,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:41,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:41,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574366019] [2024-06-28 03:17:41,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574366019] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:41,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:41,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:17:41,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395132912] [2024-06-28 03:17:41,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:41,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:17:41,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:41,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:17:41,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:17:41,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:41,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 357 transitions, 4594 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:41,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:41,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:41,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:42,902 INFO L124 PetriNetUnfolderBase]: 3128/4882 cut-off events. [2024-06-28 03:17:42,903 INFO L125 PetriNetUnfolderBase]: For 311429/311462 co-relation queries the response was YES. [2024-06-28 03:17:42,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39833 conditions, 4882 events. 3128/4882 cut-off events. For 311429/311462 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 26625 event pairs, 1034 based on Foata normal form. 8/4878 useless extension candidates. Maximal degree in co-relation 39747. Up to 4279 conditions per place. [2024-06-28 03:17:42,953 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 280 selfloop transitions, 78 changer transitions 0/395 dead transitions. [2024-06-28 03:17:42,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 395 transitions, 5536 flow [2024-06-28 03:17:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-28 03:17:42,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:17:42,954 INFO L175 Difference]: Start difference. First operand has 205 places, 357 transitions, 4594 flow. Second operand 11 states and 220 transitions. [2024-06-28 03:17:42,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 395 transitions, 5536 flow [2024-06-28 03:17:43,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 395 transitions, 5395 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 03:17:43,278 INFO L231 Difference]: Finished difference. Result has 210 places, 359 transitions, 4669 flow [2024-06-28 03:17:43,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4453, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4669, PETRI_PLACES=210, PETRI_TRANSITIONS=359} [2024-06-28 03:17:43,278 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 165 predicate places. [2024-06-28 03:17:43,278 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 359 transitions, 4669 flow [2024-06-28 03:17:43,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:43,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:43,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:43,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:17:43,279 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:43,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:43,279 INFO L85 PathProgramCache]: Analyzing trace with hash -198833273, now seen corresponding path program 1 times [2024-06-28 03:17:43,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:43,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932772123] [2024-06-28 03:17:43,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:43,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:44,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:44,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932772123] [2024-06-28 03:17:44,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932772123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:44,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:44,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:17:44,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085384280] [2024-06-28 03:17:44,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:44,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:17:44,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:44,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:17:44,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:17:44,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:44,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 359 transitions, 4669 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:44,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:44,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:44,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:46,175 INFO L124 PetriNetUnfolderBase]: 3354/5164 cut-off events. [2024-06-28 03:17:46,176 INFO L125 PetriNetUnfolderBase]: For 326816/326819 co-relation queries the response was YES. [2024-06-28 03:17:46,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41959 conditions, 5164 events. 3354/5164 cut-off events. For 326816/326819 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 27665 event pairs, 1075 based on Foata normal form. 10/5169 useless extension candidates. Maximal degree in co-relation 41871. Up to 4662 conditions per place. [2024-06-28 03:17:46,226 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 336 selfloop transitions, 86 changer transitions 0/428 dead transitions. [2024-06-28 03:17:46,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 428 transitions, 6315 flow [2024-06-28 03:17:46,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:17:46,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:17:46,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 251 transitions. [2024-06-28 03:17:46,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388111888111888 [2024-06-28 03:17:46,228 INFO L175 Difference]: Start difference. First operand has 210 places, 359 transitions, 4669 flow. Second operand 13 states and 251 transitions. [2024-06-28 03:17:46,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 428 transitions, 6315 flow [2024-06-28 03:17:46,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 428 transitions, 6083 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:46,577 INFO L231 Difference]: Finished difference. Result has 217 places, 379 transitions, 4996 flow [2024-06-28 03:17:46,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4437, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4996, PETRI_PLACES=217, PETRI_TRANSITIONS=379} [2024-06-28 03:17:46,578 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 172 predicate places. [2024-06-28 03:17:46,578 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 379 transitions, 4996 flow [2024-06-28 03:17:46,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:46,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:46,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:46,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:17:46,579 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:46,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:46,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1613153840, now seen corresponding path program 4 times [2024-06-28 03:17:46,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:46,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656672100] [2024-06-28 03:17:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:46,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:46,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:47,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:47,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656672100] [2024-06-28 03:17:47,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656672100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:47,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:47,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:47,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552756827] [2024-06-28 03:17:47,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:47,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:47,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:47,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:47,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 379 transitions, 4996 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:47,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:47,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:47,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:49,131 INFO L124 PetriNetUnfolderBase]: 3348/5245 cut-off events. [2024-06-28 03:17:49,131 INFO L125 PetriNetUnfolderBase]: For 364511/364521 co-relation queries the response was YES. [2024-06-28 03:17:49,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44216 conditions, 5245 events. 3348/5245 cut-off events. For 364511/364521 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 29200 event pairs, 1020 based on Foata normal form. 15/5253 useless extension candidates. Maximal degree in co-relation 44124. Up to 4565 conditions per place. [2024-06-28 03:17:49,187 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 332 selfloop transitions, 74 changer transitions 0/443 dead transitions. [2024-06-28 03:17:49,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 443 transitions, 6481 flow [2024-06-28 03:17:49,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:49,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:49,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 223 transitions. [2024-06-28 03:17:49,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607438016528926 [2024-06-28 03:17:49,188 INFO L175 Difference]: Start difference. First operand has 217 places, 379 transitions, 4996 flow. Second operand 11 states and 223 transitions. [2024-06-28 03:17:49,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 443 transitions, 6481 flow [2024-06-28 03:17:49,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 443 transitions, 6264 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:49,578 INFO L231 Difference]: Finished difference. Result has 222 places, 401 transitions, 5329 flow [2024-06-28 03:17:49,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=4779, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5329, PETRI_PLACES=222, PETRI_TRANSITIONS=401} [2024-06-28 03:17:49,579 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 177 predicate places. [2024-06-28 03:17:49,579 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 401 transitions, 5329 flow [2024-06-28 03:17:49,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:49,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:49,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:49,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:17:49,579 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:49,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1613093266, now seen corresponding path program 2 times [2024-06-28 03:17:49,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:49,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306684969] [2024-06-28 03:17:49,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:49,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:50,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:50,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306684969] [2024-06-28 03:17:50,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306684969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:50,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:50,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:50,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566806407] [2024-06-28 03:17:50,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:50,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:50,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:50,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:50,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:50,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:50,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 401 transitions, 5329 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:50,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:50,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:50,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:51,964 INFO L124 PetriNetUnfolderBase]: 3540/5457 cut-off events. [2024-06-28 03:17:51,964 INFO L125 PetriNetUnfolderBase]: For 378012/378015 co-relation queries the response was YES. [2024-06-28 03:17:51,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46116 conditions, 5457 events. 3540/5457 cut-off events. For 378012/378015 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 29710 event pairs, 1093 based on Foata normal form. 5/5457 useless extension candidates. Maximal degree in co-relation 46021. Up to 5019 conditions per place. [2024-06-28 03:17:52,024 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 371 selfloop transitions, 72 changer transitions 0/449 dead transitions. [2024-06-28 03:17:52,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 449 transitions, 6533 flow [2024-06-28 03:17:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:17:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:17:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-28 03:17:52,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-28 03:17:52,026 INFO L175 Difference]: Start difference. First operand has 222 places, 401 transitions, 5329 flow. Second operand 12 states and 225 transitions. [2024-06-28 03:17:52,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 449 transitions, 6533 flow [2024-06-28 03:17:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 449 transitions, 6405 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 03:17:52,484 INFO L231 Difference]: Finished difference. Result has 227 places, 410 transitions, 5518 flow [2024-06-28 03:17:52,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5201, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5518, PETRI_PLACES=227, PETRI_TRANSITIONS=410} [2024-06-28 03:17:52,485 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 182 predicate places. [2024-06-28 03:17:52,485 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 410 transitions, 5518 flow [2024-06-28 03:17:52,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:52,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:52,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:52,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:17:52,486 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:52,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:52,486 INFO L85 PathProgramCache]: Analyzing trace with hash 889863932, now seen corresponding path program 5 times [2024-06-28 03:17:52,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:52,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44247035] [2024-06-28 03:17:52,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:52,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:53,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:53,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44247035] [2024-06-28 03:17:53,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44247035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:53,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:53,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:53,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117105552] [2024-06-28 03:17:53,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:53,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:53,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:53,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:53,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:53,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:53,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 410 transitions, 5518 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:53,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:53,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:53,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:55,288 INFO L124 PetriNetUnfolderBase]: 3351/5255 cut-off events. [2024-06-28 03:17:55,288 INFO L125 PetriNetUnfolderBase]: For 389717/389727 co-relation queries the response was YES. [2024-06-28 03:17:55,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44945 conditions, 5255 events. 3351/5255 cut-off events. For 389717/389727 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29332 event pairs, 1038 based on Foata normal form. 17/5265 useless extension candidates. Maximal degree in co-relation 44848. Up to 4671 conditions per place. [2024-06-28 03:17:55,342 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 345 selfloop transitions, 62 changer transitions 0/447 dead transitions. [2024-06-28 03:17:55,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 447 transitions, 6497 flow [2024-06-28 03:17:55,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:17:55,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:17:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-28 03:17:55,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45041322314049587 [2024-06-28 03:17:55,343 INFO L175 Difference]: Start difference. First operand has 227 places, 410 transitions, 5518 flow. Second operand 11 states and 218 transitions. [2024-06-28 03:17:55,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 447 transitions, 6497 flow [2024-06-28 03:17:55,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 447 transitions, 6190 flow, removed 89 selfloop flow, removed 10 redundant places. [2024-06-28 03:17:55,718 INFO L231 Difference]: Finished difference. Result has 228 places, 410 transitions, 5350 flow [2024-06-28 03:17:55,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5211, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5350, PETRI_PLACES=228, PETRI_TRANSITIONS=410} [2024-06-28 03:17:55,719 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 183 predicate places. [2024-06-28 03:17:55,719 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 410 transitions, 5350 flow [2024-06-28 03:17:55,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:55,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:55,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:55,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:17:55,720 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:55,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1495005710, now seen corresponding path program 6 times [2024-06-28 03:17:55,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:55,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676119228] [2024-06-28 03:17:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:55,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:56,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:56,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:56,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676119228] [2024-06-28 03:17:56,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676119228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:56,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:56,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:56,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275916730] [2024-06-28 03:17:56,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:56,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:56,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:56,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:56,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:57,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:17:57,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 410 transitions, 5350 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:57,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:57,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:17:57,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:17:58,267 INFO L124 PetriNetUnfolderBase]: 3380/5294 cut-off events. [2024-06-28 03:17:58,268 INFO L125 PetriNetUnfolderBase]: For 401473/401480 co-relation queries the response was YES. [2024-06-28 03:17:58,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45368 conditions, 5294 events. 3380/5294 cut-off events. For 401473/401480 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 29482 event pairs, 1050 based on Foata normal form. 10/5299 useless extension candidates. Maximal degree in co-relation 45270. Up to 4650 conditions per place. [2024-06-28 03:17:58,325 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 322 selfloop transitions, 83 changer transitions 0/445 dead transitions. [2024-06-28 03:17:58,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 445 transitions, 6442 flow [2024-06-28 03:17:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:17:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:17:58,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-28 03:17:58,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2024-06-28 03:17:58,327 INFO L175 Difference]: Start difference. First operand has 228 places, 410 transitions, 5350 flow. Second operand 10 states and 202 transitions. [2024-06-28 03:17:58,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 445 transitions, 6442 flow [2024-06-28 03:17:58,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 445 transitions, 6323 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:17:58,783 INFO L231 Difference]: Finished difference. Result has 229 places, 412 transitions, 5472 flow [2024-06-28 03:17:58,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5231, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5472, PETRI_PLACES=229, PETRI_TRANSITIONS=412} [2024-06-28 03:17:58,784 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 184 predicate places. [2024-06-28 03:17:58,784 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 412 transitions, 5472 flow [2024-06-28 03:17:58,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:58,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:17:58,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:17:58,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:17:58,785 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:17:58,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:17:58,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1495005586, now seen corresponding path program 3 times [2024-06-28 03:17:58,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:17:58,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845484926] [2024-06-28 03:17:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:17:58,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:17:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:17:59,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:17:59,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:17:59,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845484926] [2024-06-28 03:17:59,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845484926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:17:59,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:17:59,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:17:59,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663319400] [2024-06-28 03:17:59,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:17:59,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:17:59,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:17:59,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:17:59,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:17:59,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:17:59,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 412 transitions, 5472 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:17:59,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:17:59,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:17:59,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:01,147 INFO L124 PetriNetUnfolderBase]: 3566/5498 cut-off events. [2024-06-28 03:18:01,148 INFO L125 PetriNetUnfolderBase]: For 421090/421097 co-relation queries the response was YES. [2024-06-28 03:18:01,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47418 conditions, 5498 events. 3566/5498 cut-off events. For 421090/421097 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 30010 event pairs, 1099 based on Foata normal form. 6/5499 useless extension candidates. Maximal degree in co-relation 47319. Up to 4817 conditions per place. [2024-06-28 03:18:01,214 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 302 selfloop transitions, 148 changer transitions 0/456 dead transitions. [2024-06-28 03:18:01,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 456 transitions, 6944 flow [2024-06-28 03:18:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:01,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-28 03:18:01,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45041322314049587 [2024-06-28 03:18:01,216 INFO L175 Difference]: Start difference. First operand has 229 places, 412 transitions, 5472 flow. Second operand 11 states and 218 transitions. [2024-06-28 03:18:01,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 456 transitions, 6944 flow [2024-06-28 03:18:01,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 456 transitions, 6721 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:01,702 INFO L231 Difference]: Finished difference. Result has 232 places, 418 transitions, 5704 flow [2024-06-28 03:18:01,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5249, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5704, PETRI_PLACES=232, PETRI_TRANSITIONS=418} [2024-06-28 03:18:01,703 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 187 predicate places. [2024-06-28 03:18:01,703 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 418 transitions, 5704 flow [2024-06-28 03:18:01,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:01,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:01,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:01,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:18:01,703 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:01,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:01,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1077038466, now seen corresponding path program 4 times [2024-06-28 03:18:01,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:01,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742651599] [2024-06-28 03:18:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:01,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:02,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:02,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:02,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742651599] [2024-06-28 03:18:02,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742651599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:02,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:02,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:02,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892529685] [2024-06-28 03:18:02,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:02,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:02,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:02,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:02,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:02,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:02,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 418 transitions, 5704 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:02,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:02,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:02,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:03,999 INFO L124 PetriNetUnfolderBase]: 3561/5486 cut-off events. [2024-06-28 03:18:03,999 INFO L125 PetriNetUnfolderBase]: For 437295/437302 co-relation queries the response was YES. [2024-06-28 03:18:04,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48050 conditions, 5486 events. 3561/5486 cut-off events. For 437295/437302 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 29900 event pairs, 1104 based on Foata normal form. 6/5487 useless extension candidates. Maximal degree in co-relation 47950. Up to 4835 conditions per place. [2024-06-28 03:18:04,077 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 298 selfloop transitions, 146 changer transitions 0/450 dead transitions. [2024-06-28 03:18:04,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 450 transitions, 6808 flow [2024-06-28 03:18:04,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 03:18:04,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-28 03:18:04,082 INFO L175 Difference]: Start difference. First operand has 232 places, 418 transitions, 5704 flow. Second operand 10 states and 197 transitions. [2024-06-28 03:18:04,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 450 transitions, 6808 flow [2024-06-28 03:18:04,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 450 transitions, 6467 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:04,540 INFO L231 Difference]: Finished difference. Result has 234 places, 418 transitions, 5663 flow [2024-06-28 03:18:04,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5363, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5663, PETRI_PLACES=234, PETRI_TRANSITIONS=418} [2024-06-28 03:18:04,541 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 189 predicate places. [2024-06-28 03:18:04,541 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 418 transitions, 5663 flow [2024-06-28 03:18:04,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:04,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:04,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:04,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:18:04,542 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:04,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:04,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1494821260, now seen corresponding path program 3 times [2024-06-28 03:18:04,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:04,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826072020] [2024-06-28 03:18:04,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:04,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:05,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:05,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:05,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826072020] [2024-06-28 03:18:05,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826072020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:05,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:05,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:05,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807235335] [2024-06-28 03:18:05,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:05,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:05,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:05,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:05,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:05,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:05,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 418 transitions, 5663 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:05,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:05,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:05,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:06,798 INFO L124 PetriNetUnfolderBase]: 3583/5519 cut-off events. [2024-06-28 03:18:06,798 INFO L125 PetriNetUnfolderBase]: For 455224/455231 co-relation queries the response was YES. [2024-06-28 03:18:06,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48840 conditions, 5519 events. 3583/5519 cut-off events. For 455224/455231 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 30156 event pairs, 1070 based on Foata normal form. 8/5522 useless extension candidates. Maximal degree in co-relation 48738. Up to 4515 conditions per place. [2024-06-28 03:18:06,957 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 273 selfloop transitions, 182 changer transitions 0/461 dead transitions. [2024-06-28 03:18:06,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 461 transitions, 7335 flow [2024-06-28 03:18:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-28 03:18:06,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:18:06,959 INFO L175 Difference]: Start difference. First operand has 234 places, 418 transitions, 5663 flow. Second operand 10 states and 209 transitions. [2024-06-28 03:18:06,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 461 transitions, 7335 flow [2024-06-28 03:18:07,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 461 transitions, 7035 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:07,387 INFO L231 Difference]: Finished difference. Result has 235 places, 421 transitions, 5786 flow [2024-06-28 03:18:07,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5363, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5786, PETRI_PLACES=235, PETRI_TRANSITIONS=421} [2024-06-28 03:18:07,388 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 190 predicate places. [2024-06-28 03:18:07,388 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 421 transitions, 5786 flow [2024-06-28 03:18:07,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:07,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:07,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:07,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:18:07,388 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:07,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:07,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1494827770, now seen corresponding path program 4 times [2024-06-28 03:18:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:07,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733110453] [2024-06-28 03:18:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:07,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:08,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:08,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733110453] [2024-06-28 03:18:08,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733110453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:08,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:08,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:08,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057800813] [2024-06-28 03:18:08,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:08,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:08,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:08,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:08,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:08,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:08,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 421 transitions, 5786 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:08,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:08,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:08,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:09,814 INFO L124 PetriNetUnfolderBase]: 3573/5504 cut-off events. [2024-06-28 03:18:09,814 INFO L125 PetriNetUnfolderBase]: For 468661/468668 co-relation queries the response was YES. [2024-06-28 03:18:09,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49136 conditions, 5504 events. 3573/5504 cut-off events. For 468661/468668 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 30044 event pairs, 1068 based on Foata normal form. 8/5507 useless extension candidates. Maximal degree in co-relation 49033. Up to 4507 conditions per place. [2024-06-28 03:18:09,870 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 277 selfloop transitions, 177 changer transitions 0/460 dead transitions. [2024-06-28 03:18:09,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 460 transitions, 7232 flow [2024-06-28 03:18:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2024-06-28 03:18:09,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 03:18:09,871 INFO L175 Difference]: Start difference. First operand has 235 places, 421 transitions, 5786 flow. Second operand 10 states and 209 transitions. [2024-06-28 03:18:09,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 460 transitions, 7232 flow [2024-06-28 03:18:10,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 460 transitions, 6831 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:10,493 INFO L231 Difference]: Finished difference. Result has 238 places, 421 transitions, 5747 flow [2024-06-28 03:18:10,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5385, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5747, PETRI_PLACES=238, PETRI_TRANSITIONS=421} [2024-06-28 03:18:10,494 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 193 predicate places. [2024-06-28 03:18:10,495 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 421 transitions, 5747 flow [2024-06-28 03:18:10,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:10,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:10,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:10,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:18:10,495 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:10,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:10,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1728994726, now seen corresponding path program 1 times [2024-06-28 03:18:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:10,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565332345] [2024-06-28 03:18:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:10,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:11,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:11,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:11,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565332345] [2024-06-28 03:18:11,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565332345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:11,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:11,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:18:11,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985684674] [2024-06-28 03:18:11,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:11,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:18:11,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:18:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:18:11,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:11,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 421 transitions, 5747 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:11,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:11,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:11,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:12,302 INFO L124 PetriNetUnfolderBase]: 3753/5847 cut-off events. [2024-06-28 03:18:12,302 INFO L125 PetriNetUnfolderBase]: For 550051/550072 co-relation queries the response was YES. [2024-06-28 03:18:12,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52842 conditions, 5847 events. 3753/5847 cut-off events. For 550051/550072 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 32294 event pairs, 1300 based on Foata normal form. 5/5830 useless extension candidates. Maximal degree in co-relation 52738. Up to 5226 conditions per place. [2024-06-28 03:18:12,367 INFO L140 encePairwiseOnDemand]: 34/44 looper letters, 337 selfloop transitions, 34 changer transitions 0/445 dead transitions. [2024-06-28 03:18:12,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 445 transitions, 6739 flow [2024-06-28 03:18:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:18:12,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:18:12,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 03:18:12,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-06-28 03:18:12,368 INFO L175 Difference]: Start difference. First operand has 238 places, 421 transitions, 5747 flow. Second operand 7 states and 141 transitions. [2024-06-28 03:18:12,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 445 transitions, 6739 flow [2024-06-28 03:18:13,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 445 transitions, 6338 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 03:18:13,027 INFO L231 Difference]: Finished difference. Result has 235 places, 427 transitions, 5490 flow [2024-06-28 03:18:13,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5346, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5490, PETRI_PLACES=235, PETRI_TRANSITIONS=427} [2024-06-28 03:18:13,028 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 190 predicate places. [2024-06-28 03:18:13,028 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 427 transitions, 5490 flow [2024-06-28 03:18:13,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:13,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:13,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:13,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:18:13,028 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:13,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:13,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1786801148, now seen corresponding path program 7 times [2024-06-28 03:18:13,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:13,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333896256] [2024-06-28 03:18:13,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:13,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:14,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:14,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333896256] [2024-06-28 03:18:14,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333896256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:14,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:14,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:14,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081849782] [2024-06-28 03:18:14,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:14,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:14,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:14,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:14,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:14,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:14,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 427 transitions, 5490 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:14,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:14,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:14,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:15,582 INFO L124 PetriNetUnfolderBase]: 3538/5472 cut-off events. [2024-06-28 03:18:15,582 INFO L125 PetriNetUnfolderBase]: For 536411/536507 co-relation queries the response was YES. [2024-06-28 03:18:15,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50378 conditions, 5472 events. 3538/5472 cut-off events. For 536411/536507 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 30391 event pairs, 878 based on Foata normal form. 22/5446 useless extension candidates. Maximal degree in co-relation 50273. Up to 4489 conditions per place. [2024-06-28 03:18:15,644 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 306 selfloop transitions, 124 changer transitions 0/472 dead transitions. [2024-06-28 03:18:15,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 472 transitions, 6902 flow [2024-06-28 03:18:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:15,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:15,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2024-06-28 03:18:15,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-06-28 03:18:15,646 INFO L175 Difference]: Start difference. First operand has 235 places, 427 transitions, 5490 flow. Second operand 10 states and 205 transitions. [2024-06-28 03:18:15,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 472 transitions, 6902 flow [2024-06-28 03:18:16,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 472 transitions, 6852 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-28 03:18:16,253 INFO L231 Difference]: Finished difference. Result has 242 places, 431 transitions, 5815 flow [2024-06-28 03:18:16,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5440, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5815, PETRI_PLACES=242, PETRI_TRANSITIONS=431} [2024-06-28 03:18:16,253 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 197 predicate places. [2024-06-28 03:18:16,253 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 431 transitions, 5815 flow [2024-06-28 03:18:16,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:16,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:16,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:16,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:18:16,254 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:16,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:16,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1533717955, now seen corresponding path program 2 times [2024-06-28 03:18:16,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:16,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282792245] [2024-06-28 03:18:16,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:16,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:17,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:17,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:17,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282792245] [2024-06-28 03:18:17,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282792245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:17,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:17,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:17,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479866554] [2024-06-28 03:18:17,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:17,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:17,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:17,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:17,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:17,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:17,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 431 transitions, 5815 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:17,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:17,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:17,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:18,911 INFO L124 PetriNetUnfolderBase]: 3676/5651 cut-off events. [2024-06-28 03:18:18,912 INFO L125 PetriNetUnfolderBase]: For 522942/522945 co-relation queries the response was YES. [2024-06-28 03:18:18,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51521 conditions, 5651 events. 3676/5651 cut-off events. For 522942/522945 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 30878 event pairs, 1094 based on Foata normal form. 6/5653 useless extension candidates. Maximal degree in co-relation 51414. Up to 5118 conditions per place. [2024-06-28 03:18:18,979 INFO L140 encePairwiseOnDemand]: 29/44 looper letters, 391 selfloop transitions, 89 changer transitions 0/486 dead transitions. [2024-06-28 03:18:18,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 486 transitions, 7132 flow [2024-06-28 03:18:18,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 03:18:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 03:18:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 261 transitions. [2024-06-28 03:18:18,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237012987012987 [2024-06-28 03:18:18,981 INFO L175 Difference]: Start difference. First operand has 242 places, 431 transitions, 5815 flow. Second operand 14 states and 261 transitions. [2024-06-28 03:18:18,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 486 transitions, 7132 flow [2024-06-28 03:18:19,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 486 transitions, 6872 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:19,641 INFO L231 Difference]: Finished difference. Result has 248 places, 437 transitions, 5857 flow [2024-06-28 03:18:19,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5555, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5857, PETRI_PLACES=248, PETRI_TRANSITIONS=437} [2024-06-28 03:18:19,642 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 203 predicate places. [2024-06-28 03:18:19,642 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 437 transitions, 5857 flow [2024-06-28 03:18:19,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:19,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:19,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:19,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:18:19,643 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:19,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:19,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1340226808, now seen corresponding path program 5 times [2024-06-28 03:18:19,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:19,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751514580] [2024-06-28 03:18:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:19,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:20,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:20,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751514580] [2024-06-28 03:18:20,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751514580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:20,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:20,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613865985] [2024-06-28 03:18:20,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:20,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:20,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:20,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:20,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 437 transitions, 5857 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:20,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:20,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:20,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:22,071 INFO L124 PetriNetUnfolderBase]: 3673/5638 cut-off events. [2024-06-28 03:18:22,071 INFO L125 PetriNetUnfolderBase]: For 485368/485371 co-relation queries the response was YES. [2024-06-28 03:18:22,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50695 conditions, 5638 events. 3673/5638 cut-off events. For 485368/485371 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 30775 event pairs, 1138 based on Foata normal form. 5/5634 useless extension candidates. Maximal degree in co-relation 50588. Up to 5067 conditions per place. [2024-06-28 03:18:22,143 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 359 selfloop transitions, 112 changer transitions 0/477 dead transitions. [2024-06-28 03:18:22,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 477 transitions, 7079 flow [2024-06-28 03:18:22,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:18:22,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:18:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-28 03:18:22,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:18:22,145 INFO L175 Difference]: Start difference. First operand has 248 places, 437 transitions, 5857 flow. Second operand 11 states and 209 transitions. [2024-06-28 03:18:22,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 477 transitions, 7079 flow [2024-06-28 03:18:22,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 477 transitions, 6786 flow, removed 64 selfloop flow, removed 12 redundant places. [2024-06-28 03:18:22,751 INFO L231 Difference]: Finished difference. Result has 247 places, 437 transitions, 5822 flow [2024-06-28 03:18:22,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5564, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5822, PETRI_PLACES=247, PETRI_TRANSITIONS=437} [2024-06-28 03:18:22,752 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 202 predicate places. [2024-06-28 03:18:22,752 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 437 transitions, 5822 flow [2024-06-28 03:18:22,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:22,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:22,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:22,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:18:22,753 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:22,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:22,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1340226932, now seen corresponding path program 8 times [2024-06-28 03:18:22,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:22,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625870569] [2024-06-28 03:18:22,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:22,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:23,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:23,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:23,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625870569] [2024-06-28 03:18:23,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625870569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:23,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:23,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:23,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025700891] [2024-06-28 03:18:23,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:23,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:23,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:23,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:23,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:24,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:24,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 437 transitions, 5822 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:24,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:24,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:24,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:25,218 INFO L124 PetriNetUnfolderBase]: 3494/5444 cut-off events. [2024-06-28 03:18:25,218 INFO L125 PetriNetUnfolderBase]: For 499763/499804 co-relation queries the response was YES. [2024-06-28 03:18:25,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49335 conditions, 5444 events. 3494/5444 cut-off events. For 499763/499804 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 30375 event pairs, 1084 based on Foata normal form. 18/5447 useless extension candidates. Maximal degree in co-relation 49227. Up to 4719 conditions per place. [2024-06-28 03:18:25,289 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 338 selfloop transitions, 94 changer transitions 0/474 dead transitions. [2024-06-28 03:18:25,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 474 transitions, 6918 flow [2024-06-28 03:18:25,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:18:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:18:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-28 03:18:25,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45681818181818185 [2024-06-28 03:18:25,291 INFO L175 Difference]: Start difference. First operand has 247 places, 437 transitions, 5822 flow. Second operand 10 states and 201 transitions. [2024-06-28 03:18:25,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 474 transitions, 6918 flow [2024-06-28 03:18:26,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 474 transitions, 6602 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-28 03:18:26,026 INFO L231 Difference]: Finished difference. Result has 248 places, 437 transitions, 5722 flow [2024-06-28 03:18:26,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5506, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5722, PETRI_PLACES=248, PETRI_TRANSITIONS=437} [2024-06-28 03:18:26,027 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 203 predicate places. [2024-06-28 03:18:26,027 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 437 transitions, 5722 flow [2024-06-28 03:18:26,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:26,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:26,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:26,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:18:26,027 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:26,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:26,028 INFO L85 PathProgramCache]: Analyzing trace with hash 899468739, now seen corresponding path program 3 times [2024-06-28 03:18:26,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:26,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679246843] [2024-06-28 03:18:26,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:26,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:27,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:27,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679246843] [2024-06-28 03:18:27,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679246843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:27,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:27,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:18:27,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171786981] [2024-06-28 03:18:27,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:27,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:18:27,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:27,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:18:27,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:18:27,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:27,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 437 transitions, 5722 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:27,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:27,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:27,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:28,731 INFO L124 PetriNetUnfolderBase]: 3704/5701 cut-off events. [2024-06-28 03:18:28,731 INFO L125 PetriNetUnfolderBase]: For 498533/498540 co-relation queries the response was YES. [2024-06-28 03:18:28,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51181 conditions, 5701 events. 3704/5701 cut-off events. For 498533/498540 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 31295 event pairs, 1068 based on Foata normal form. 8/5704 useless extension candidates. Maximal degree in co-relation 51072. Up to 4583 conditions per place. [2024-06-28 03:18:28,787 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 305 selfloop transitions, 187 changer transitions 0/498 dead transitions. [2024-06-28 03:18:28,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 498 transitions, 7736 flow [2024-06-28 03:18:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:18:28,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:18:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 267 transitions. [2024-06-28 03:18:28,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46678321678321677 [2024-06-28 03:18:28,789 INFO L175 Difference]: Start difference. First operand has 248 places, 437 transitions, 5722 flow. Second operand 13 states and 267 transitions. [2024-06-28 03:18:28,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 498 transitions, 7736 flow [2024-06-28 03:18:29,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 498 transitions, 7485 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:18:29,428 INFO L231 Difference]: Finished difference. Result has 251 places, 443 transitions, 6052 flow [2024-06-28 03:18:29,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5491, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6052, PETRI_PLACES=251, PETRI_TRANSITIONS=443} [2024-06-28 03:18:29,429 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 206 predicate places. [2024-06-28 03:18:29,429 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 443 transitions, 6052 flow [2024-06-28 03:18:29,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:29,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:29,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:29,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:18:29,430 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:29,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:29,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1337425462, now seen corresponding path program 5 times [2024-06-28 03:18:29,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:29,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872245342] [2024-06-28 03:18:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:30,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:30,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872245342] [2024-06-28 03:18:30,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872245342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:30,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:30,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:30,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055445112] [2024-06-28 03:18:30,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:30,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:30,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:30,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:30,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:30,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:30,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 443 transitions, 6052 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:30,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:30,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:30,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:31,672 INFO L124 PetriNetUnfolderBase]: 3705/5698 cut-off events. [2024-06-28 03:18:31,673 INFO L125 PetriNetUnfolderBase]: For 485274/485277 co-relation queries the response was YES. [2024-06-28 03:18:31,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51312 conditions, 5698 events. 3705/5698 cut-off events. For 485274/485277 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 31232 event pairs, 1136 based on Foata normal form. 8/5701 useless extension candidates. Maximal degree in co-relation 51203. Up to 5196 conditions per place. [2024-06-28 03:18:31,736 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 385 selfloop transitions, 86 changer transitions 0/477 dead transitions. [2024-06-28 03:18:31,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 477 transitions, 7298 flow [2024-06-28 03:18:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:31,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:31,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:18:31,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 03:18:31,746 INFO L175 Difference]: Start difference. First operand has 251 places, 443 transitions, 6052 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:18:31,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 477 transitions, 7298 flow [2024-06-28 03:18:32,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 477 transitions, 6987 flow, removed 78 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:32,271 INFO L231 Difference]: Finished difference. Result has 252 places, 446 transitions, 6037 flow [2024-06-28 03:18:32,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5741, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6037, PETRI_PLACES=252, PETRI_TRANSITIONS=446} [2024-06-28 03:18:32,272 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 207 predicate places. [2024-06-28 03:18:32,272 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 446 transitions, 6037 flow [2024-06-28 03:18:32,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:32,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:32,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:32,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:18:32,272 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:32,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:32,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1221954802, now seen corresponding path program 6 times [2024-06-28 03:18:32,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:32,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908711880] [2024-06-28 03:18:32,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:32,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:33,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908711880] [2024-06-28 03:18:33,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908711880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:33,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:33,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:33,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113498865] [2024-06-28 03:18:33,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:33,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:33,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:33,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:33,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 446 transitions, 6037 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:33,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:33,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:33,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:34,540 INFO L124 PetriNetUnfolderBase]: 3808/5863 cut-off events. [2024-06-28 03:18:34,540 INFO L125 PetriNetUnfolderBase]: For 514332/514339 co-relation queries the response was YES. [2024-06-28 03:18:34,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53913 conditions, 5863 events. 3808/5863 cut-off events. For 514332/514339 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 32355 event pairs, 1078 based on Foata normal form. 10/5868 useless extension candidates. Maximal degree in co-relation 53802. Up to 4715 conditions per place. [2024-06-28 03:18:34,610 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 289 selfloop transitions, 215 changer transitions 0/510 dead transitions. [2024-06-28 03:18:34,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 510 transitions, 8397 flow [2024-06-28 03:18:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:34,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-28 03:18:34,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4696969696969697 [2024-06-28 03:18:34,612 INFO L175 Difference]: Start difference. First operand has 252 places, 446 transitions, 6037 flow. Second operand 9 states and 186 transitions. [2024-06-28 03:18:34,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 510 transitions, 8397 flow [2024-06-28 03:18:35,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 510 transitions, 8145 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:35,137 INFO L231 Difference]: Finished difference. Result has 253 places, 465 transitions, 6803 flow [2024-06-28 03:18:35,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=5793, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6803, PETRI_PLACES=253, PETRI_TRANSITIONS=465} [2024-06-28 03:18:35,138 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 208 predicate places. [2024-06-28 03:18:35,138 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 465 transitions, 6803 flow [2024-06-28 03:18:35,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:35,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:35,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:35,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:18:35,139 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:35,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:35,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1221961312, now seen corresponding path program 7 times [2024-06-28 03:18:35,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:35,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536984974] [2024-06-28 03:18:35,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:35,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:36,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:36,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:36,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536984974] [2024-06-28 03:18:36,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536984974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:36,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:36,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:36,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141246924] [2024-06-28 03:18:36,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:36,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:36,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:36,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:36,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:36,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:36,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 465 transitions, 6803 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:36,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:36,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:36,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:37,639 INFO L124 PetriNetUnfolderBase]: 3844/5918 cut-off events. [2024-06-28 03:18:37,640 INFO L125 PetriNetUnfolderBase]: For 522227/522234 co-relation queries the response was YES. [2024-06-28 03:18:37,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55264 conditions, 5918 events. 3844/5918 cut-off events. For 522227/522234 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 32732 event pairs, 1080 based on Foata normal form. 10/5923 useless extension candidates. Maximal degree in co-relation 55153. Up to 4747 conditions per place. [2024-06-28 03:18:37,719 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 302 selfloop transitions, 214 changer transitions 0/522 dead transitions. [2024-06-28 03:18:37,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 522 transitions, 8946 flow [2024-06-28 03:18:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:37,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 188 transitions. [2024-06-28 03:18:37,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2024-06-28 03:18:37,721 INFO L175 Difference]: Start difference. First operand has 253 places, 465 transitions, 6803 flow. Second operand 9 states and 188 transitions. [2024-06-28 03:18:37,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 522 transitions, 8946 flow [2024-06-28 03:18:38,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 522 transitions, 8521 flow, removed 154 selfloop flow, removed 5 redundant places. [2024-06-28 03:18:38,322 INFO L231 Difference]: Finished difference. Result has 257 places, 473 transitions, 7079 flow [2024-06-28 03:18:38,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6440, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7079, PETRI_PLACES=257, PETRI_TRANSITIONS=473} [2024-06-28 03:18:38,323 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 212 predicate places. [2024-06-28 03:18:38,323 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 473 transitions, 7079 flow [2024-06-28 03:18:38,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:38,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:38,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:38,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:18:38,323 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:38,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:38,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1151384520, now seen corresponding path program 6 times [2024-06-28 03:18:38,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:38,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269037893] [2024-06-28 03:18:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:38,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:39,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:39,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269037893] [2024-06-28 03:18:39,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269037893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:39,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:39,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:39,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728872617] [2024-06-28 03:18:39,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:39,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:39,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:39,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:39,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:39,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:39,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 473 transitions, 7079 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:39,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:39,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:39,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:40,749 INFO L124 PetriNetUnfolderBase]: 3855/5925 cut-off events. [2024-06-28 03:18:40,749 INFO L125 PetriNetUnfolderBase]: For 514776/514783 co-relation queries the response was YES. [2024-06-28 03:18:40,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55651 conditions, 5925 events. 3855/5925 cut-off events. For 514776/514783 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 32726 event pairs, 1131 based on Foata normal form. 6/5926 useless extension candidates. Maximal degree in co-relation 55539. Up to 5239 conditions per place. [2024-06-28 03:18:40,814 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 354 selfloop transitions, 149 changer transitions 0/509 dead transitions. [2024-06-28 03:18:40,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 509 transitions, 8483 flow [2024-06-28 03:18:40,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:40,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:40,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 03:18:40,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 03:18:40,816 INFO L175 Difference]: Start difference. First operand has 257 places, 473 transitions, 7079 flow. Second operand 9 states and 176 transitions. [2024-06-28 03:18:40,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 509 transitions, 8483 flow [2024-06-28 03:18:41,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 509 transitions, 8087 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-28 03:18:41,415 INFO L231 Difference]: Finished difference. Result has 260 places, 476 transitions, 7090 flow [2024-06-28 03:18:41,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6683, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7090, PETRI_PLACES=260, PETRI_TRANSITIONS=476} [2024-06-28 03:18:41,415 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 215 predicate places. [2024-06-28 03:18:41,416 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 476 transitions, 7090 flow [2024-06-28 03:18:41,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:41,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:41,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:41,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:18:41,416 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:41,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1904954238, now seen corresponding path program 8 times [2024-06-28 03:18:41,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:41,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562828731] [2024-06-28 03:18:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:41,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:42,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:42,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562828731] [2024-06-28 03:18:42,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562828731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:42,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:42,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:42,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022553265] [2024-06-28 03:18:42,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:42,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:42,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:42,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:42,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:42,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:42,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 476 transitions, 7090 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:42,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:42,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:42,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:43,811 INFO L124 PetriNetUnfolderBase]: 3839/5910 cut-off events. [2024-06-28 03:18:43,811 INFO L125 PetriNetUnfolderBase]: For 514552/514559 co-relation queries the response was YES. [2024-06-28 03:18:43,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55119 conditions, 5910 events. 3839/5910 cut-off events. For 514552/514559 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 32688 event pairs, 1075 based on Foata normal form. 10/5915 useless extension candidates. Maximal degree in co-relation 55007. Up to 4750 conditions per place. [2024-06-28 03:18:43,874 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 307 selfloop transitions, 208 changer transitions 0/521 dead transitions. [2024-06-28 03:18:43,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 521 transitions, 8751 flow [2024-06-28 03:18:43,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:43,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:43,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 187 transitions. [2024-06-28 03:18:43,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 03:18:43,876 INFO L175 Difference]: Start difference. First operand has 260 places, 476 transitions, 7090 flow. Second operand 9 states and 187 transitions. [2024-06-28 03:18:43,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 521 transitions, 8751 flow [2024-06-28 03:18:44,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 521 transitions, 8296 flow, removed 81 selfloop flow, removed 8 redundant places. [2024-06-28 03:18:44,444 INFO L231 Difference]: Finished difference. Result has 261 places, 476 transitions, 7073 flow [2024-06-28 03:18:44,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6639, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7073, PETRI_PLACES=261, PETRI_TRANSITIONS=476} [2024-06-28 03:18:44,444 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 216 predicate places. [2024-06-28 03:18:44,444 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 476 transitions, 7073 flow [2024-06-28 03:18:44,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:44,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:44,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:44,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:18:44,445 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:44,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1904954052, now seen corresponding path program 7 times [2024-06-28 03:18:44,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:44,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74372261] [2024-06-28 03:18:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:44,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:45,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:45,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74372261] [2024-06-28 03:18:45,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74372261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:45,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:45,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:45,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292323991] [2024-06-28 03:18:45,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:45,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:45,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:45,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:45,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:45,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 476 transitions, 7073 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:45,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:45,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:45,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:47,051 INFO L124 PetriNetUnfolderBase]: 3861/5940 cut-off events. [2024-06-28 03:18:47,051 INFO L125 PetriNetUnfolderBase]: For 510592/510599 co-relation queries the response was YES. [2024-06-28 03:18:47,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55478 conditions, 5940 events. 3861/5940 cut-off events. For 510592/510599 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 32868 event pairs, 1123 based on Foata normal form. 6/5941 useless extension candidates. Maximal degree in co-relation 55366. Up to 5249 conditions per place. [2024-06-28 03:18:47,116 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 366 selfloop transitions, 143 changer transitions 0/515 dead transitions. [2024-06-28 03:18:47,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 515 transitions, 8514 flow [2024-06-28 03:18:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 03:18:47,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-28 03:18:47,117 INFO L175 Difference]: Start difference. First operand has 261 places, 476 transitions, 7073 flow. Second operand 9 states and 177 transitions. [2024-06-28 03:18:47,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 515 transitions, 8514 flow [2024-06-28 03:18:47,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 515 transitions, 7876 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-28 03:18:47,655 INFO L231 Difference]: Finished difference. Result has 259 places, 482 transitions, 6861 flow [2024-06-28 03:18:47,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6435, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6861, PETRI_PLACES=259, PETRI_TRANSITIONS=482} [2024-06-28 03:18:47,656 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 214 predicate places. [2024-06-28 03:18:47,656 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 482 transitions, 6861 flow [2024-06-28 03:18:47,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:47,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:47,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:47,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:18:47,657 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:47,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:47,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1904949402, now seen corresponding path program 8 times [2024-06-28 03:18:47,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:47,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9754567] [2024-06-28 03:18:47,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:47,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:47,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:48,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:48,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9754567] [2024-06-28 03:18:48,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9754567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:48,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:48,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:48,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037822310] [2024-06-28 03:18:48,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:48,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:48,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:48,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:48,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:48,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:48,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 482 transitions, 6861 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:48,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:48,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:48,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:50,286 INFO L124 PetriNetUnfolderBase]: 3872/5961 cut-off events. [2024-06-28 03:18:50,286 INFO L125 PetriNetUnfolderBase]: For 511025/511032 co-relation queries the response was YES. [2024-06-28 03:18:50,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55529 conditions, 5961 events. 3872/5961 cut-off events. For 511025/511032 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 32987 event pairs, 1118 based on Foata normal form. 6/5962 useless extension candidates. Maximal degree in co-relation 55418. Up to 5205 conditions per place. [2024-06-28 03:18:50,348 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 353 selfloop transitions, 158 changer transitions 0/517 dead transitions. [2024-06-28 03:18:50,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 517 transitions, 8270 flow [2024-06-28 03:18:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:50,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:18:50,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2024-06-28 03:18:50,350 INFO L175 Difference]: Start difference. First operand has 259 places, 482 transitions, 6861 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:18:50,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 517 transitions, 8270 flow [2024-06-28 03:18:50,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 517 transitions, 7913 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:50,871 INFO L231 Difference]: Finished difference. Result has 261 places, 485 transitions, 6940 flow [2024-06-28 03:18:50,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6504, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6940, PETRI_PLACES=261, PETRI_TRANSITIONS=485} [2024-06-28 03:18:50,871 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 216 predicate places. [2024-06-28 03:18:50,872 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 485 transitions, 6940 flow [2024-06-28 03:18:50,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:50,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:50,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:50,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:18:50,872 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:50,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:50,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1904949278, now seen corresponding path program 9 times [2024-06-28 03:18:50,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:50,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579804258] [2024-06-28 03:18:50,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:50,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:51,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:51,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:51,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579804258] [2024-06-28 03:18:51,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579804258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:51,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:51,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:51,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151645641] [2024-06-28 03:18:51,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:51,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:51,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:51,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:52,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:52,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 485 transitions, 6940 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:52,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:52,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:52,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:53,447 INFO L124 PetriNetUnfolderBase]: 3718/5805 cut-off events. [2024-06-28 03:18:53,447 INFO L125 PetriNetUnfolderBase]: For 532447/532454 co-relation queries the response was YES. [2024-06-28 03:18:53,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55084 conditions, 5805 events. 3718/5805 cut-off events. For 532447/532454 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 32801 event pairs, 1074 based on Foata normal form. 10/5810 useless extension candidates. Maximal degree in co-relation 54972. Up to 5082 conditions per place. [2024-06-28 03:18:53,519 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 387 selfloop transitions, 85 changer transitions 0/518 dead transitions. [2024-06-28 03:18:53,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 518 transitions, 8215 flow [2024-06-28 03:18:53,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:53,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:53,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 03:18:53,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45707070707070707 [2024-06-28 03:18:53,521 INFO L175 Difference]: Start difference. First operand has 261 places, 485 transitions, 6940 flow. Second operand 9 states and 181 transitions. [2024-06-28 03:18:53,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 518 transitions, 8215 flow [2024-06-28 03:18:54,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 518 transitions, 7815 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:54,063 INFO L231 Difference]: Finished difference. Result has 263 places, 487 transitions, 6808 flow [2024-06-28 03:18:54,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6540, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6808, PETRI_PLACES=263, PETRI_TRANSITIONS=487} [2024-06-28 03:18:54,064 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 218 predicate places. [2024-06-28 03:18:54,064 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 487 transitions, 6808 flow [2024-06-28 03:18:54,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:54,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:54,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:54,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:18:54,065 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:54,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:54,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1583542778, now seen corresponding path program 2 times [2024-06-28 03:18:54,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:54,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087616263] [2024-06-28 03:18:54,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:54,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:54,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:54,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:54,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087616263] [2024-06-28 03:18:54,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087616263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:54,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:54,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:18:54,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029679388] [2024-06-28 03:18:54,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:54,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:18:54,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:54,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:18:54,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:18:55,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:18:55,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 487 transitions, 6808 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:55,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:55,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:18:55,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:56,260 INFO L124 PetriNetUnfolderBase]: 4103/6375 cut-off events. [2024-06-28 03:18:56,260 INFO L125 PetriNetUnfolderBase]: For 626119/626145 co-relation queries the response was YES. [2024-06-28 03:18:56,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60642 conditions, 6375 events. 4103/6375 cut-off events. For 626119/626145 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 35740 event pairs, 1333 based on Foata normal form. 5/6350 useless extension candidates. Maximal degree in co-relation 60529. Up to 5727 conditions per place. [2024-06-28 03:18:56,343 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 391 selfloop transitions, 35 changer transitions 0/504 dead transitions. [2024-06-28 03:18:56,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 504 transitions, 7880 flow [2024-06-28 03:18:56,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:18:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:18:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-28 03:18:56,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 03:18:56,345 INFO L175 Difference]: Start difference. First operand has 263 places, 487 transitions, 6808 flow. Second operand 6 states and 122 transitions. [2024-06-28 03:18:56,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 504 transitions, 7880 flow [2024-06-28 03:18:57,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 504 transitions, 7640 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 03:18:57,070 INFO L231 Difference]: Finished difference. Result has 262 places, 490 transitions, 6689 flow [2024-06-28 03:18:57,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6568, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6689, PETRI_PLACES=262, PETRI_TRANSITIONS=490} [2024-06-28 03:18:57,071 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 217 predicate places. [2024-06-28 03:18:57,071 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 490 transitions, 6689 flow [2024-06-28 03:18:57,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:57,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:18:57,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:18:57,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:18:57,072 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:18:57,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:18:57,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1779566556, now seen corresponding path program 9 times [2024-06-28 03:18:57,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:18:57,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828400409] [2024-06-28 03:18:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:18:57,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:18:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:18:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:18:57,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:18:57,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828400409] [2024-06-28 03:18:57,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828400409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:18:57,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:18:57,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:18:57,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155701293] [2024-06-28 03:18:57,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:18:57,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:18:57,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:18:57,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:18:57,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:18:58,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:18:58,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 490 transitions, 6689 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:18:58,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:18:58,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:18:58,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:18:59,320 INFO L124 PetriNetUnfolderBase]: 3935/6049 cut-off events. [2024-06-28 03:18:59,320 INFO L125 PetriNetUnfolderBase]: For 574674/574678 co-relation queries the response was YES. [2024-06-28 03:18:59,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57355 conditions, 6049 events. 3935/6049 cut-off events. For 574674/574678 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 33614 event pairs, 1411 based on Foata normal form. 6/6050 useless extension candidates. Maximal degree in co-relation 57241. Up to 5665 conditions per place. [2024-06-28 03:18:59,406 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 493 selfloop transitions, 31 changer transitions 0/530 dead transitions. [2024-06-28 03:18:59,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 530 transitions, 8258 flow [2024-06-28 03:18:59,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:18:59,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:18:59,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 03:18:59,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 03:18:59,407 INFO L175 Difference]: Start difference. First operand has 262 places, 490 transitions, 6689 flow. Second operand 9 states and 168 transitions. [2024-06-28 03:18:59,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 530 transitions, 8258 flow [2024-06-28 03:19:00,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 530 transitions, 8191 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 03:19:00,075 INFO L231 Difference]: Finished difference. Result has 267 places, 498 transitions, 6964 flow [2024-06-28 03:19:00,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6622, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6964, PETRI_PLACES=267, PETRI_TRANSITIONS=498} [2024-06-28 03:19:00,075 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 222 predicate places. [2024-06-28 03:19:00,076 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 498 transitions, 6964 flow [2024-06-28 03:19:00,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:00,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:00,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:00,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:19:00,076 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:00,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:00,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2070772862, now seen corresponding path program 10 times [2024-06-28 03:19:00,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:00,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970105428] [2024-06-28 03:19:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:00,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:00,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:00,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970105428] [2024-06-28 03:19:00,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970105428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:00,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:00,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16247799] [2024-06-28 03:19:00,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:00,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:00,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:00,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:00,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:01,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:01,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 498 transitions, 6964 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:01,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:01,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:01,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:02,425 INFO L124 PetriNetUnfolderBase]: 4023/6187 cut-off events. [2024-06-28 03:19:02,425 INFO L125 PetriNetUnfolderBase]: For 592738/592742 co-relation queries the response was YES. [2024-06-28 03:19:02,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59175 conditions, 6187 events. 4023/6187 cut-off events. For 592738/592742 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 34563 event pairs, 1418 based on Foata normal form. 6/6188 useless extension candidates. Maximal degree in co-relation 59061. Up to 5509 conditions per place. [2024-06-28 03:19:02,497 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 461 selfloop transitions, 95 changer transitions 0/562 dead transitions. [2024-06-28 03:19:02,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 562 transitions, 9496 flow [2024-06-28 03:19:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 03:19:02,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:19:02,498 INFO L175 Difference]: Start difference. First operand has 267 places, 498 transitions, 6964 flow. Second operand 9 states and 180 transitions. [2024-06-28 03:19:02,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 562 transitions, 9496 flow [2024-06-28 03:19:03,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 562 transitions, 9261 flow, removed 88 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:03,188 INFO L231 Difference]: Finished difference. Result has 268 places, 514 transitions, 7464 flow [2024-06-28 03:19:03,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6729, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7464, PETRI_PLACES=268, PETRI_TRANSITIONS=514} [2024-06-28 03:19:03,189 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 223 predicate places. [2024-06-28 03:19:03,189 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 514 transitions, 7464 flow [2024-06-28 03:19:03,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:03,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:03,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:03,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:19:03,190 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:03,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash 329826098, now seen corresponding path program 11 times [2024-06-28 03:19:03,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:03,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171918767] [2024-06-28 03:19:03,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:03,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:04,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:04,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:04,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171918767] [2024-06-28 03:19:04,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171918767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:04,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:04,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:04,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254448247] [2024-06-28 03:19:04,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:04,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:04,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:04,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:04,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:04,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:04,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 514 transitions, 7464 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:04,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:04,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:04,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:05,430 INFO L124 PetriNetUnfolderBase]: 4059/6245 cut-off events. [2024-06-28 03:19:05,430 INFO L125 PetriNetUnfolderBase]: For 614979/614983 co-relation queries the response was YES. [2024-06-28 03:19:05,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60160 conditions, 6245 events. 4059/6245 cut-off events. For 614979/614983 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 34942 event pairs, 1420 based on Foata normal form. 6/6246 useless extension candidates. Maximal degree in co-relation 60045. Up to 5541 conditions per place. [2024-06-28 03:19:05,644 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 468 selfloop transitions, 101 changer transitions 0/575 dead transitions. [2024-06-28 03:19:05,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 575 transitions, 9871 flow [2024-06-28 03:19:05,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:05,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 182 transitions. [2024-06-28 03:19:05,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-28 03:19:05,645 INFO L175 Difference]: Start difference. First operand has 268 places, 514 transitions, 7464 flow. Second operand 9 states and 182 transitions. [2024-06-28 03:19:05,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 575 transitions, 9871 flow [2024-06-28 03:19:06,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 575 transitions, 9235 flow, removed 158 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:06,219 INFO L231 Difference]: Finished difference. Result has 270 places, 522 transitions, 7325 flow [2024-06-28 03:19:06,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6906, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7325, PETRI_PLACES=270, PETRI_TRANSITIONS=522} [2024-06-28 03:19:06,220 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 225 predicate places. [2024-06-28 03:19:06,220 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 522 transitions, 7325 flow [2024-06-28 03:19:06,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:06,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:06,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:06,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:19:06,221 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:06,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash 329648282, now seen corresponding path program 9 times [2024-06-28 03:19:06,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:06,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476415724] [2024-06-28 03:19:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:06,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:07,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:07,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476415724] [2024-06-28 03:19:07,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476415724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:07,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:07,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:07,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413375075] [2024-06-28 03:19:07,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:07,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:07,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:07,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:07,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:07,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:07,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 522 transitions, 7325 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:07,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:07,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:07,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:08,723 INFO L124 PetriNetUnfolderBase]: 4070/6261 cut-off events. [2024-06-28 03:19:08,724 INFO L125 PetriNetUnfolderBase]: For 618341/618345 co-relation queries the response was YES. [2024-06-28 03:19:08,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60192 conditions, 6261 events. 4070/6261 cut-off events. For 618341/618345 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 35093 event pairs, 1420 based on Foata normal form. 2/6258 useless extension candidates. Maximal degree in co-relation 60076. Up to 5786 conditions per place. [2024-06-28 03:19:08,817 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 496 selfloop transitions, 60 changer transitions 0/562 dead transitions. [2024-06-28 03:19:08,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 562 transitions, 9137 flow [2024-06-28 03:19:08,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:19:08,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:19:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 03:19:08,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42954545454545456 [2024-06-28 03:19:08,818 INFO L175 Difference]: Start difference. First operand has 270 places, 522 transitions, 7325 flow. Second operand 10 states and 189 transitions. [2024-06-28 03:19:08,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 562 transitions, 9137 flow [2024-06-28 03:19:09,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 562 transitions, 8880 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-06-28 03:19:09,579 INFO L231 Difference]: Finished difference. Result has 275 places, 528 transitions, 7424 flow [2024-06-28 03:19:09,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7068, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7424, PETRI_PLACES=275, PETRI_TRANSITIONS=528} [2024-06-28 03:19:09,579 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 230 predicate places. [2024-06-28 03:19:09,580 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 528 transitions, 7424 flow [2024-06-28 03:19:09,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:09,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:09,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:09,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:19:09,580 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:09,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:09,581 INFO L85 PathProgramCache]: Analyzing trace with hash 329825912, now seen corresponding path program 10 times [2024-06-28 03:19:09,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:09,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804297909] [2024-06-28 03:19:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:09,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:10,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:10,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804297909] [2024-06-28 03:19:10,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804297909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:10,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:10,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:10,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617051080] [2024-06-28 03:19:10,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:10,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:10,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:10,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:10,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:10,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:10,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 528 transitions, 7424 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:10,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:10,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:10,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:12,071 INFO L124 PetriNetUnfolderBase]: 4081/6272 cut-off events. [2024-06-28 03:19:12,072 INFO L125 PetriNetUnfolderBase]: For 641686/641690 co-relation queries the response was YES. [2024-06-28 03:19:12,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60769 conditions, 6272 events. 4081/6272 cut-off events. For 641686/641690 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 35180 event pairs, 1418 based on Foata normal form. 2/6269 useless extension candidates. Maximal degree in co-relation 60652. Up to 5841 conditions per place. [2024-06-28 03:19:12,150 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 503 selfloop transitions, 52 changer transitions 0/561 dead transitions. [2024-06-28 03:19:12,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 561 transitions, 8920 flow [2024-06-28 03:19:12,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:12,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:12,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:19:12,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-28 03:19:12,151 INFO L175 Difference]: Start difference. First operand has 275 places, 528 transitions, 7424 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:19:12,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 561 transitions, 8920 flow [2024-06-28 03:19:12,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 561 transitions, 8669 flow, removed 94 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:12,832 INFO L231 Difference]: Finished difference. Result has 278 places, 531 transitions, 7408 flow [2024-06-28 03:19:12,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7215, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7408, PETRI_PLACES=278, PETRI_TRANSITIONS=531} [2024-06-28 03:19:12,833 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 233 predicate places. [2024-06-28 03:19:12,833 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 531 transitions, 7408 flow [2024-06-28 03:19:12,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:12,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:12,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:12,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:19:12,833 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:12,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:12,834 INFO L85 PathProgramCache]: Analyzing trace with hash 329653118, now seen corresponding path program 12 times [2024-06-28 03:19:12,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:12,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638764380] [2024-06-28 03:19:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:12,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:13,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:13,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638764380] [2024-06-28 03:19:13,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638764380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:13,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:13,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:13,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708607277] [2024-06-28 03:19:13,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:13,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:13,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:13,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:13,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 531 transitions, 7408 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:13,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:13,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:13,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:15,025 INFO L124 PetriNetUnfolderBase]: 4065/6253 cut-off events. [2024-06-28 03:19:15,026 INFO L125 PetriNetUnfolderBase]: For 656191/656195 co-relation queries the response was YES. [2024-06-28 03:19:15,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60422 conditions, 6253 events. 4065/6253 cut-off events. For 656191/656195 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 35051 event pairs, 1413 based on Foata normal form. 6/6254 useless extension candidates. Maximal degree in co-relation 60303. Up to 5560 conditions per place. [2024-06-28 03:19:15,112 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 457 selfloop transitions, 109 changer transitions 0/572 dead transitions. [2024-06-28 03:19:15,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 572 transitions, 9161 flow [2024-06-28 03:19:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 03:19:15,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-28 03:19:15,114 INFO L175 Difference]: Start difference. First operand has 278 places, 531 transitions, 7408 flow. Second operand 9 states and 177 transitions. [2024-06-28 03:19:15,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 572 transitions, 9161 flow [2024-06-28 03:19:15,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 572 transitions, 8882 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:15,881 INFO L231 Difference]: Finished difference. Result has 280 places, 531 transitions, 7361 flow [2024-06-28 03:19:15,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7129, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7361, PETRI_PLACES=280, PETRI_TRANSITIONS=531} [2024-06-28 03:19:15,881 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 235 predicate places. [2024-06-28 03:19:15,882 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 531 transitions, 7361 flow [2024-06-28 03:19:15,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:15,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:15,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:15,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:19:15,882 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:15,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash 329648158, now seen corresponding path program 10 times [2024-06-28 03:19:15,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:15,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710074114] [2024-06-28 03:19:15,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:15,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:15,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:16,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:16,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710074114] [2024-06-28 03:19:16,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710074114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:16,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:16,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947190096] [2024-06-28 03:19:16,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:16,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:17,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:17,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 531 transitions, 7361 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:17,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:17,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:17,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:18,402 INFO L124 PetriNetUnfolderBase]: 3874/6051 cut-off events. [2024-06-28 03:19:18,402 INFO L125 PetriNetUnfolderBase]: For 663820/663828 co-relation queries the response was YES. [2024-06-28 03:19:18,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58780 conditions, 6051 events. 3874/6051 cut-off events. For 663820/663828 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 34659 event pairs, 1340 based on Foata normal form. 5/6036 useless extension candidates. Maximal degree in co-relation 58660. Up to 5481 conditions per place. [2024-06-28 03:19:18,480 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 485 selfloop transitions, 26 changer transitions 0/560 dead transitions. [2024-06-28 03:19:18,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 560 transitions, 8666 flow [2024-06-28 03:19:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:18,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:19:18,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 03:19:18,482 INFO L175 Difference]: Start difference. First operand has 280 places, 531 transitions, 7361 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:19:18,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 560 transitions, 8666 flow [2024-06-28 03:19:19,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 560 transitions, 8409 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:19,416 INFO L231 Difference]: Finished difference. Result has 281 places, 533 transitions, 7257 flow [2024-06-28 03:19:19,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7104, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7257, PETRI_PLACES=281, PETRI_TRANSITIONS=533} [2024-06-28 03:19:19,417 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 236 predicate places. [2024-06-28 03:19:19,417 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 533 transitions, 7257 flow [2024-06-28 03:19:19,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:19,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:19,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:19,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:19:19,418 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:19,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash 557727248, now seen corresponding path program 13 times [2024-06-28 03:19:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:19,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019828828] [2024-06-28 03:19:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:19,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:20,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:20,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:20,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019828828] [2024-06-28 03:19:20,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019828828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:20,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:20,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:20,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461103756] [2024-06-28 03:19:20,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:20,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:20,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:20,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:20,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:20,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:20,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 533 transitions, 7257 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:20,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:20,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:20,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:21,882 INFO L124 PetriNetUnfolderBase]: 4093/6296 cut-off events. [2024-06-28 03:19:21,882 INFO L125 PetriNetUnfolderBase]: For 691279/691283 co-relation queries the response was YES. [2024-06-28 03:19:21,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61091 conditions, 6296 events. 4093/6296 cut-off events. For 691279/691283 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 35412 event pairs, 1415 based on Foata normal form. 6/6297 useless extension candidates. Maximal degree in co-relation 60970. Up to 5767 conditions per place. [2024-06-28 03:19:21,954 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 510 selfloop transitions, 64 changer transitions 0/580 dead transitions. [2024-06-28 03:19:21,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 580 transitions, 9219 flow [2024-06-28 03:19:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:21,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:19:21,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 03:19:21,966 INFO L175 Difference]: Start difference. First operand has 281 places, 533 transitions, 7257 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:19:21,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 580 transitions, 9219 flow [2024-06-28 03:19:22,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 580 transitions, 9084 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:22,686 INFO L231 Difference]: Finished difference. Result has 283 places, 541 transitions, 7489 flow [2024-06-28 03:19:22,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7122, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7489, PETRI_PLACES=283, PETRI_TRANSITIONS=541} [2024-06-28 03:19:22,687 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 238 predicate places. [2024-06-28 03:19:22,687 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 541 transitions, 7489 flow [2024-06-28 03:19:22,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:22,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:22,687 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:22,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:19:22,687 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:22,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:22,688 INFO L85 PathProgramCache]: Analyzing trace with hash 557727062, now seen corresponding path program 11 times [2024-06-28 03:19:22,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:22,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783265837] [2024-06-28 03:19:22,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:22,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:23,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:23,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:23,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783265837] [2024-06-28 03:19:23,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783265837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:23,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:23,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:23,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248228948] [2024-06-28 03:19:23,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:23,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:23,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:23,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:23,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:23,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:23,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 541 transitions, 7489 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:23,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:23,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:23,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:25,172 INFO L124 PetriNetUnfolderBase]: 4088/6289 cut-off events. [2024-06-28 03:19:25,172 INFO L125 PetriNetUnfolderBase]: For 699635/699639 co-relation queries the response was YES. [2024-06-28 03:19:25,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61219 conditions, 6289 events. 4088/6289 cut-off events. For 699635/699639 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 35362 event pairs, 1415 based on Foata normal form. 2/6286 useless extension candidates. Maximal degree in co-relation 61097. Up to 5919 conditions per place. [2024-06-28 03:19:25,254 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 534 selfloop transitions, 27 changer transitions 0/567 dead transitions. [2024-06-28 03:19:25,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 567 transitions, 8801 flow [2024-06-28 03:19:25,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:25,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 03:19:25,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 03:19:25,256 INFO L175 Difference]: Start difference. First operand has 283 places, 541 transitions, 7489 flow. Second operand 9 states and 166 transitions. [2024-06-28 03:19:25,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 567 transitions, 8801 flow [2024-06-28 03:19:26,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 567 transitions, 8324 flow, removed 107 selfloop flow, removed 9 redundant places. [2024-06-28 03:19:26,087 INFO L231 Difference]: Finished difference. Result has 283 places, 541 transitions, 7075 flow [2024-06-28 03:19:26,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7012, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7075, PETRI_PLACES=283, PETRI_TRANSITIONS=541} [2024-06-28 03:19:26,088 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 238 predicate places. [2024-06-28 03:19:26,088 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 541 transitions, 7075 flow [2024-06-28 03:19:26,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:26,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:26,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:26,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:19:26,089 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:26,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash 557733758, now seen corresponding path program 14 times [2024-06-28 03:19:26,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:26,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051438291] [2024-06-28 03:19:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:27,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:27,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051438291] [2024-06-28 03:19:27,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051438291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:27,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:27,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:27,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112087480] [2024-06-28 03:19:27,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:27,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:27,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:27,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:27,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 541 transitions, 7075 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:27,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:27,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:27,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:28,551 INFO L124 PetriNetUnfolderBase]: 4072/6267 cut-off events. [2024-06-28 03:19:28,552 INFO L125 PetriNetUnfolderBase]: For 710246/710250 co-relation queries the response was YES. [2024-06-28 03:19:28,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60435 conditions, 6267 events. 4072/6267 cut-off events. For 710246/710250 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 35227 event pairs, 1414 based on Foata normal form. 6/6268 useless extension candidates. Maximal degree in co-relation 60312. Up to 5747 conditions per place. [2024-06-28 03:19:28,631 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 515 selfloop transitions, 61 changer transitions 0/582 dead transitions. [2024-06-28 03:19:28,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 582 transitions, 8640 flow [2024-06-28 03:19:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:28,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:28,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 03:19:28,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 03:19:28,633 INFO L175 Difference]: Start difference. First operand has 283 places, 541 transitions, 7075 flow. Second operand 9 states and 173 transitions. [2024-06-28 03:19:28,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 582 transitions, 8640 flow [2024-06-28 03:19:29,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 582 transitions, 8454 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:29,637 INFO L231 Difference]: Finished difference. Result has 284 places, 541 transitions, 7026 flow [2024-06-28 03:19:29,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6889, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7026, PETRI_PLACES=284, PETRI_TRANSITIONS=541} [2024-06-28 03:19:29,638 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 239 predicate places. [2024-06-28 03:19:29,638 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 541 transitions, 7026 flow [2024-06-28 03:19:29,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:29,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:29,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:29,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:19:29,638 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:29,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1981780848, now seen corresponding path program 3 times [2024-06-28 03:19:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:29,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327433575] [2024-06-28 03:19:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:29,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:30,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:30,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327433575] [2024-06-28 03:19:30,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327433575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:30,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:30,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:19:30,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600074833] [2024-06-28 03:19:30,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:30,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:19:30,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:30,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:19:30,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:19:30,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2024-06-28 03:19:30,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 541 transitions, 7026 flow. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:30,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:30,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2024-06-28 03:19:30,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:31,886 INFO L124 PetriNetUnfolderBase]: 4354/6743 cut-off events. [2024-06-28 03:19:31,887 INFO L125 PetriNetUnfolderBase]: For 824213/824277 co-relation queries the response was YES. [2024-06-28 03:19:31,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65229 conditions, 6743 events. 4354/6743 cut-off events. For 824213/824277 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 38289 event pairs, 1643 based on Foata normal form. 18/6692 useless extension candidates. Maximal degree in co-relation 65105. Up to 6143 conditions per place. [2024-06-28 03:19:31,981 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 456 selfloop transitions, 12 changer transitions 0/549 dead transitions. [2024-06-28 03:19:31,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 549 transitions, 8004 flow [2024-06-28 03:19:31,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:19:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:19:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-28 03:19:31,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-28 03:19:31,982 INFO L175 Difference]: Start difference. First operand has 284 places, 541 transitions, 7026 flow. Second operand 6 states and 113 transitions. [2024-06-28 03:19:31,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 549 transitions, 8004 flow [2024-06-28 03:19:32,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 549 transitions, 7819 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 03:19:32,998 INFO L231 Difference]: Finished difference. Result has 282 places, 541 transitions, 6871 flow [2024-06-28 03:19:32,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6841, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6871, PETRI_PLACES=282, PETRI_TRANSITIONS=541} [2024-06-28 03:19:32,998 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 237 predicate places. [2024-06-28 03:19:32,999 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 541 transitions, 6871 flow [2024-06-28 03:19:32,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:32,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:32,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:32,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:19:32,999 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:32,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:32,999 INFO L85 PathProgramCache]: Analyzing trace with hash 505769850, now seen corresponding path program 1 times [2024-06-28 03:19:33,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:33,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748692651] [2024-06-28 03:19:33,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:33,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:33,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:33,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:33,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748692651] [2024-06-28 03:19:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748692651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:33,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:33,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:19:33,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787515036] [2024-06-28 03:19:33,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:33,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:19:33,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:33,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:19:33,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:19:33,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:33,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 541 transitions, 6871 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:33,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:33,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:33,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:35,221 INFO L124 PetriNetUnfolderBase]: 4603/7038 cut-off events. [2024-06-28 03:19:35,222 INFO L125 PetriNetUnfolderBase]: For 840621/840625 co-relation queries the response was YES. [2024-06-28 03:19:35,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66981 conditions, 7038 events. 4603/7038 cut-off events. For 840621/840625 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 38967 event pairs, 1698 based on Foata normal form. 2/7024 useless extension candidates. Maximal degree in co-relation 66856. Up to 6573 conditions per place. [2024-06-28 03:19:35,309 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 494 selfloop transitions, 17 changer transitions 0/559 dead transitions. [2024-06-28 03:19:35,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 559 transitions, 8181 flow [2024-06-28 03:19:35,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:19:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:19:35,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 114 transitions. [2024-06-28 03:19:35,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:19:35,310 INFO L175 Difference]: Start difference. First operand has 282 places, 541 transitions, 6871 flow. Second operand 6 states and 114 transitions. [2024-06-28 03:19:35,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 559 transitions, 8181 flow [2024-06-28 03:19:36,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 559 transitions, 8127 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 03:19:36,158 INFO L231 Difference]: Finished difference. Result has 283 places, 547 transitions, 6951 flow [2024-06-28 03:19:36,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6817, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6951, PETRI_PLACES=283, PETRI_TRANSITIONS=547} [2024-06-28 03:19:36,159 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 238 predicate places. [2024-06-28 03:19:36,159 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 547 transitions, 6951 flow [2024-06-28 03:19:36,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:36,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:36,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:36,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:19:36,160 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:36,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:36,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2030048220, now seen corresponding path program 2 times [2024-06-28 03:19:36,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:36,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039449697] [2024-06-28 03:19:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:36,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:36,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:36,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039449697] [2024-06-28 03:19:36,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039449697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:36,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:36,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:19:36,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918397540] [2024-06-28 03:19:36,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:36,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:19:36,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:36,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:19:36,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:19:36,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:36,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 547 transitions, 6951 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:36,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:36,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:36,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:38,451 INFO L124 PetriNetUnfolderBase]: 4600/7035 cut-off events. [2024-06-28 03:19:38,451 INFO L125 PetriNetUnfolderBase]: For 862847/862854 co-relation queries the response was YES. [2024-06-28 03:19:38,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67666 conditions, 7035 events. 4600/7035 cut-off events. For 862847/862854 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 38982 event pairs, 1701 based on Foata normal form. 4/7022 useless extension candidates. Maximal degree in co-relation 67540. Up to 6570 conditions per place. [2024-06-28 03:19:38,684 INFO L140 encePairwiseOnDemand]: 36/44 looper letters, 490 selfloop transitions, 17 changer transitions 0/555 dead transitions. [2024-06-28 03:19:38,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 555 transitions, 8007 flow [2024-06-28 03:19:38,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:19:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:19:38,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 03:19:38,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:19:38,686 INFO L175 Difference]: Start difference. First operand has 283 places, 547 transitions, 6951 flow. Second operand 6 states and 110 transitions. [2024-06-28 03:19:38,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 555 transitions, 8007 flow [2024-06-28 03:19:39,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 555 transitions, 7924 flow, removed 37 selfloop flow, removed 2 redundant places. [2024-06-28 03:19:39,567 INFO L231 Difference]: Finished difference. Result has 287 places, 547 transitions, 6908 flow [2024-06-28 03:19:39,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6868, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6908, PETRI_PLACES=287, PETRI_TRANSITIONS=547} [2024-06-28 03:19:39,568 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 242 predicate places. [2024-06-28 03:19:39,568 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 547 transitions, 6908 flow [2024-06-28 03:19:39,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:39,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:39,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:39,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:19:39,569 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:39,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:39,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1502539252, now seen corresponding path program 1 times [2024-06-28 03:19:39,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:39,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090005480] [2024-06-28 03:19:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:39,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:39,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:40,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:40,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090005480] [2024-06-28 03:19:40,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090005480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:40,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:40,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:40,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63703787] [2024-06-28 03:19:40,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:40,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:40,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:40,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:40,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:40,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:19:40,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 547 transitions, 6908 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:40,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:40,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:19:40,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:42,505 INFO L124 PetriNetUnfolderBase]: 4775/7207 cut-off events. [2024-06-28 03:19:42,506 INFO L125 PetriNetUnfolderBase]: For 881928/881928 co-relation queries the response was YES. [2024-06-28 03:19:42,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68859 conditions, 7207 events. 4775/7207 cut-off events. For 881928/881928 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 39077 event pairs, 1725 based on Foata normal form. 4/7208 useless extension candidates. Maximal degree in co-relation 68731. Up to 6896 conditions per place. [2024-06-28 03:19:42,612 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 552 selfloop transitions, 22 changer transitions 0/579 dead transitions. [2024-06-28 03:19:42,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 579 transitions, 8366 flow [2024-06-28 03:19:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:19:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:19:42,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 03:19:42,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-28 03:19:42,763 INFO L175 Difference]: Start difference. First operand has 287 places, 547 transitions, 6908 flow. Second operand 9 states and 159 transitions. [2024-06-28 03:19:42,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 579 transitions, 8366 flow [2024-06-28 03:19:43,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 579 transitions, 8320 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:19:43,701 INFO L231 Difference]: Finished difference. Result has 292 places, 552 transitions, 7033 flow [2024-06-28 03:19:43,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6862, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7033, PETRI_PLACES=292, PETRI_TRANSITIONS=552} [2024-06-28 03:19:43,701 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 247 predicate places. [2024-06-28 03:19:43,702 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 552 transitions, 7033 flow [2024-06-28 03:19:43,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:43,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:43,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:43,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:19:43,702 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:43,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:43,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1981796720, now seen corresponding path program 1 times [2024-06-28 03:19:43,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:43,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365167796] [2024-06-28 03:19:43,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:43,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:43,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:44,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:44,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365167796] [2024-06-28 03:19:44,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365167796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:44,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:44,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:19:44,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558877881] [2024-06-28 03:19:44,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:44,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:19:44,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:44,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:19:44,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:19:44,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:44,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 552 transitions, 7033 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:44,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:44,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:44,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:46,043 INFO L124 PetriNetUnfolderBase]: 4510/6897 cut-off events. [2024-06-28 03:19:46,044 INFO L125 PetriNetUnfolderBase]: For 906232/906296 co-relation queries the response was YES. [2024-06-28 03:19:46,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67423 conditions, 6897 events. 4510/6897 cut-off events. For 906232/906296 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 38206 event pairs, 1727 based on Foata normal form. 19/6849 useless extension candidates. Maximal degree in co-relation 67293. Up to 6437 conditions per place. [2024-06-28 03:19:46,138 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 472 selfloop transitions, 15 changer transitions 0/566 dead transitions. [2024-06-28 03:19:46,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 566 transitions, 8091 flow [2024-06-28 03:19:46,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:19:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:19:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 03:19:46,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2024-06-28 03:19:46,139 INFO L175 Difference]: Start difference. First operand has 292 places, 552 transitions, 7033 flow. Second operand 7 states and 124 transitions. [2024-06-28 03:19:46,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 566 transitions, 8091 flow [2024-06-28 03:19:47,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 566 transitions, 7972 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:47,102 INFO L231 Difference]: Finished difference. Result has 293 places, 555 transitions, 6992 flow [2024-06-28 03:19:47,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6914, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6992, PETRI_PLACES=293, PETRI_TRANSITIONS=555} [2024-06-28 03:19:47,103 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 248 predicate places. [2024-06-28 03:19:47,103 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 555 transitions, 6992 flow [2024-06-28 03:19:47,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:47,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:47,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:47,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:19:47,104 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:47,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:47,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1082690696, now seen corresponding path program 1 times [2024-06-28 03:19:47,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:47,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654240133] [2024-06-28 03:19:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:47,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:47,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:47,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:47,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654240133] [2024-06-28 03:19:47,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654240133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:47,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:47,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:47,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753145836] [2024-06-28 03:19:47,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:47,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:47,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:47,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:47,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:48,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:48,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 555 transitions, 6992 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:48,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:48,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:48,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:49,722 INFO L124 PetriNetUnfolderBase]: 4408/6744 cut-off events. [2024-06-28 03:19:49,722 INFO L125 PetriNetUnfolderBase]: For 931613/931621 co-relation queries the response was YES. [2024-06-28 03:19:49,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68014 conditions, 6744 events. 4408/6744 cut-off events. For 931613/931621 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 37504 event pairs, 988 based on Foata normal form. 10/6747 useless extension candidates. Maximal degree in co-relation 67883. Up to 5541 conditions per place. [2024-06-28 03:19:49,812 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 475 selfloop transitions, 125 changer transitions 0/607 dead transitions. [2024-06-28 03:19:49,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 607 transitions, 9142 flow [2024-06-28 03:19:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:19:49,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:19:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-28 03:19:49,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44834710743801653 [2024-06-28 03:19:49,814 INFO L175 Difference]: Start difference. First operand has 293 places, 555 transitions, 6992 flow. Second operand 11 states and 217 transitions. [2024-06-28 03:19:49,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 607 transitions, 9142 flow [2024-06-28 03:19:50,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 607 transitions, 9086 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:19:50,683 INFO L231 Difference]: Finished difference. Result has 300 places, 562 transitions, 7530 flow [2024-06-28 03:19:50,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=6936, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7530, PETRI_PLACES=300, PETRI_TRANSITIONS=562} [2024-06-28 03:19:50,684 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 255 predicate places. [2024-06-28 03:19:50,684 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 562 transitions, 7530 flow [2024-06-28 03:19:50,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:50,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:50,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:50,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:19:50,685 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:50,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:50,685 INFO L85 PathProgramCache]: Analyzing trace with hash -332466071, now seen corresponding path program 4 times [2024-06-28 03:19:50,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:50,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923926892] [2024-06-28 03:19:50,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:50,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:51,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:51,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:51,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923926892] [2024-06-28 03:19:51,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923926892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:51,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:51,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:51,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588017562] [2024-06-28 03:19:51,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:51,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:51,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:51,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:51,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:51,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:51,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 562 transitions, 7530 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:51,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:51,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:51,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:53,657 INFO L124 PetriNetUnfolderBase]: 4514/6937 cut-off events. [2024-06-28 03:19:53,657 INFO L125 PetriNetUnfolderBase]: For 976213/976216 co-relation queries the response was YES. [2024-06-28 03:19:53,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71297 conditions, 6937 events. 4514/6937 cut-off events. For 976213/976216 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 39057 event pairs, 1188 based on Foata normal form. 6/6941 useless extension candidates. Maximal degree in co-relation 71164. Up to 6021 conditions per place. [2024-06-28 03:19:53,758 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 486 selfloop transitions, 136 changer transitions 0/629 dead transitions. [2024-06-28 03:19:53,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 629 transitions, 9934 flow [2024-06-28 03:19:53,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:19:53,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:19:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2024-06-28 03:19:53,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45265151515151514 [2024-06-28 03:19:53,759 INFO L175 Difference]: Start difference. First operand has 300 places, 562 transitions, 7530 flow. Second operand 12 states and 239 transitions. [2024-06-28 03:19:53,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 629 transitions, 9934 flow [2024-06-28 03:19:54,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 629 transitions, 9636 flow, removed 95 selfloop flow, removed 6 redundant places. [2024-06-28 03:19:54,861 INFO L231 Difference]: Finished difference. Result has 307 places, 582 transitions, 8051 flow [2024-06-28 03:19:54,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7246, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8051, PETRI_PLACES=307, PETRI_TRANSITIONS=582} [2024-06-28 03:19:54,862 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 262 predicate places. [2024-06-28 03:19:54,862 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 582 transitions, 8051 flow [2024-06-28 03:19:54,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:54,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:54,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:54,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:19:54,862 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:54,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:54,863 INFO L85 PathProgramCache]: Analyzing trace with hash -430419406, now seen corresponding path program 2 times [2024-06-28 03:19:54,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:54,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919016282] [2024-06-28 03:19:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:54,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:55,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:55,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:55,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919016282] [2024-06-28 03:19:55,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919016282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:55,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:55,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:55,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77867331] [2024-06-28 03:19:55,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:55,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:55,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:55,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:55,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:19:55,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:19:55,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 582 transitions, 8051 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:55,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:19:55,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:19:55,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:19:57,590 INFO L124 PetriNetUnfolderBase]: 4594/7051 cut-off events. [2024-06-28 03:19:57,591 INFO L125 PetriNetUnfolderBase]: For 1025869/1025877 co-relation queries the response was YES. [2024-06-28 03:19:57,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73517 conditions, 7051 events. 4594/7051 cut-off events. For 1025869/1025877 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 39860 event pairs, 1225 based on Foata normal form. 12/7057 useless extension candidates. Maximal degree in co-relation 73381. Up to 6118 conditions per place. [2024-06-28 03:19:57,688 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 509 selfloop transitions, 124 changer transitions 0/640 dead transitions. [2024-06-28 03:19:57,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 640 transitions, 10077 flow [2024-06-28 03:19:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:19:57,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:19:57,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-06-28 03:19:57,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44507575757575757 [2024-06-28 03:19:57,690 INFO L175 Difference]: Start difference. First operand has 307 places, 582 transitions, 8051 flow. Second operand 12 states and 235 transitions. [2024-06-28 03:19:57,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 640 transitions, 10077 flow [2024-06-28 03:19:59,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 640 transitions, 9864 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-28 03:19:59,063 INFO L231 Difference]: Finished difference. Result has 312 places, 592 transitions, 8374 flow [2024-06-28 03:19:59,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=7846, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8374, PETRI_PLACES=312, PETRI_TRANSITIONS=592} [2024-06-28 03:19:59,063 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 267 predicate places. [2024-06-28 03:19:59,063 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 592 transitions, 8374 flow [2024-06-28 03:19:59,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:19:59,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:19:59,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:19:59,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:19:59,064 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:19:59,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:19:59,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1564476286, now seen corresponding path program 3 times [2024-06-28 03:19:59,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:19:59,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352849436] [2024-06-28 03:19:59,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:19:59,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:19:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:19:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:19:59,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:19:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352849436] [2024-06-28 03:19:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352849436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:19:59,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:19:59,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:19:59,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655583876] [2024-06-28 03:19:59,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:19:59,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:19:59,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:19:59,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:19:59,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:00,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:00,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 592 transitions, 8374 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:00,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:00,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:00,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:01,992 INFO L124 PetriNetUnfolderBase]: 4638/7127 cut-off events. [2024-06-28 03:20:01,992 INFO L125 PetriNetUnfolderBase]: For 1056409/1056412 co-relation queries the response was YES. [2024-06-28 03:20:02,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74741 conditions, 7127 events. 4638/7127 cut-off events. For 1056409/1056412 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 40508 event pairs, 1277 based on Foata normal form. 8/7129 useless extension candidates. Maximal degree in co-relation 74603. Up to 6354 conditions per place. [2024-06-28 03:20:02,091 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 526 selfloop transitions, 109 changer transitions 0/642 dead transitions. [2024-06-28 03:20:02,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 642 transitions, 10325 flow [2024-06-28 03:20:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:20:02,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:20:02,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 233 transitions. [2024-06-28 03:20:02,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412878787878788 [2024-06-28 03:20:02,093 INFO L175 Difference]: Start difference. First operand has 312 places, 592 transitions, 8374 flow. Second operand 12 states and 233 transitions. [2024-06-28 03:20:02,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 642 transitions, 10325 flow [2024-06-28 03:20:03,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 642 transitions, 10089 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:03,500 INFO L231 Difference]: Finished difference. Result has 316 places, 598 transitions, 8567 flow [2024-06-28 03:20:03,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8138, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8567, PETRI_PLACES=316, PETRI_TRANSITIONS=598} [2024-06-28 03:20:03,503 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 271 predicate places. [2024-06-28 03:20:03,503 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 598 transitions, 8567 flow [2024-06-28 03:20:03,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:03,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:03,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:03,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:20:03,504 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:03,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:03,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1564472566, now seen corresponding path program 4 times [2024-06-28 03:20:03,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:03,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841018679] [2024-06-28 03:20:03,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:03,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:04,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:04,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841018679] [2024-06-28 03:20:04,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841018679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:04,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:04,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:20:04,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342390142] [2024-06-28 03:20:04,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:04,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:20:04,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:04,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:20:04,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:20:04,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:04,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 598 transitions, 8567 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:04,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:04,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:04,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:06,591 INFO L124 PetriNetUnfolderBase]: 4625/7110 cut-off events. [2024-06-28 03:20:06,591 INFO L125 PetriNetUnfolderBase]: For 1068486/1068489 co-relation queries the response was YES. [2024-06-28 03:20:06,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74616 conditions, 7110 events. 4625/7110 cut-off events. For 1068486/1068489 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 40402 event pairs, 1297 based on Foata normal form. 8/7112 useless extension candidates. Maximal degree in co-relation 74476. Up to 6421 conditions per place. [2024-06-28 03:20:06,693 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 528 selfloop transitions, 103 changer transitions 0/638 dead transitions. [2024-06-28 03:20:06,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 638 transitions, 10050 flow [2024-06-28 03:20:06,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:20:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:20:06,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 230 transitions. [2024-06-28 03:20:06,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4356060606060606 [2024-06-28 03:20:06,695 INFO L175 Difference]: Start difference. First operand has 316 places, 598 transitions, 8567 flow. Second operand 12 states and 230 transitions. [2024-06-28 03:20:06,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 638 transitions, 10050 flow [2024-06-28 03:20:08,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 638 transitions, 9725 flow, removed 102 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:08,220 INFO L231 Difference]: Finished difference. Result has 320 places, 598 transitions, 8458 flow [2024-06-28 03:20:08,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8242, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8458, PETRI_PLACES=320, PETRI_TRANSITIONS=598} [2024-06-28 03:20:08,221 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 275 predicate places. [2024-06-28 03:20:08,221 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 598 transitions, 8458 flow [2024-06-28 03:20:08,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:08,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:08,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:08,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:20:08,221 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:08,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:08,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1119244238, now seen corresponding path program 5 times [2024-06-28 03:20:08,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:08,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911347340] [2024-06-28 03:20:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:08,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:09,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:09,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911347340] [2024-06-28 03:20:09,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911347340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:09,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:09,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:09,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002385937] [2024-06-28 03:20:09,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:09,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:09,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:09,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:09,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:09,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 598 transitions, 8458 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:09,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:09,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:09,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:11,384 INFO L124 PetriNetUnfolderBase]: 4754/7306 cut-off events. [2024-06-28 03:20:11,384 INFO L125 PetriNetUnfolderBase]: For 1115194/1115197 co-relation queries the response was YES. [2024-06-28 03:20:11,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76964 conditions, 7306 events. 4754/7306 cut-off events. For 1115194/1115197 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 41725 event pairs, 1257 based on Foata normal form. 8/7310 useless extension candidates. Maximal degree in co-relation 76822. Up to 6492 conditions per place. [2024-06-28 03:20:11,485 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 558 selfloop transitions, 100 changer transitions 0/665 dead transitions. [2024-06-28 03:20:11,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 665 transitions, 10694 flow [2024-06-28 03:20:11,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:20:11,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:20:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 233 transitions. [2024-06-28 03:20:11,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412878787878788 [2024-06-28 03:20:11,487 INFO L175 Difference]: Start difference. First operand has 320 places, 598 transitions, 8458 flow. Second operand 12 states and 233 transitions. [2024-06-28 03:20:11,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 665 transitions, 10694 flow [2024-06-28 03:20:13,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 665 transitions, 10464 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:20:13,083 INFO L231 Difference]: Finished difference. Result has 322 places, 616 transitions, 8912 flow [2024-06-28 03:20:13,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8240, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8912, PETRI_PLACES=322, PETRI_TRANSITIONS=616} [2024-06-28 03:20:13,084 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 277 predicate places. [2024-06-28 03:20:13,084 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 616 transitions, 8912 flow [2024-06-28 03:20:13,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:13,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:13,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:13,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:20:13,085 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:13,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:13,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1533717800, now seen corresponding path program 6 times [2024-06-28 03:20:13,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:13,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893689056] [2024-06-28 03:20:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:13,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:14,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:14,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893689056] [2024-06-28 03:20:14,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893689056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:14,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:14,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:14,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825380840] [2024-06-28 03:20:14,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:14,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:14,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:14,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:14,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:14,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 616 transitions, 8912 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:14,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:14,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:14,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:16,494 INFO L124 PetriNetUnfolderBase]: 4793/7371 cut-off events. [2024-06-28 03:20:16,494 INFO L125 PetriNetUnfolderBase]: For 1154002/1154005 co-relation queries the response was YES. [2024-06-28 03:20:16,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78343 conditions, 7371 events. 4793/7371 cut-off events. For 1154002/1154005 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 42231 event pairs, 1330 based on Foata normal form. 10/7377 useless extension candidates. Maximal degree in co-relation 78199. Up to 6802 conditions per place. [2024-06-28 03:20:16,606 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 579 selfloop transitions, 80 changer transitions 0/666 dead transitions. [2024-06-28 03:20:16,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 666 transitions, 10653 flow [2024-06-28 03:20:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:20:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:20:16,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 242 transitions. [2024-06-28 03:20:16,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230769230769231 [2024-06-28 03:20:16,608 INFO L175 Difference]: Start difference. First operand has 322 places, 616 transitions, 8912 flow. Second operand 13 states and 242 transitions. [2024-06-28 03:20:16,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 666 transitions, 10653 flow [2024-06-28 03:20:18,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 666 transitions, 10455 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:18,567 INFO L231 Difference]: Finished difference. Result has 327 places, 622 transitions, 9119 flow [2024-06-28 03:20:18,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8714, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9119, PETRI_PLACES=327, PETRI_TRANSITIONS=622} [2024-06-28 03:20:18,568 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 282 predicate places. [2024-06-28 03:20:18,568 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 622 transitions, 9119 flow [2024-06-28 03:20:18,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:18,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:18,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:18,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:20:18,568 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:18,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:18,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1533714080, now seen corresponding path program 7 times [2024-06-28 03:20:18,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:18,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427226719] [2024-06-28 03:20:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:18,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:19,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:19,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427226719] [2024-06-28 03:20:19,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427226719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:19,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:19,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:19,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59838395] [2024-06-28 03:20:19,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:19,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:19,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:19,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:19,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 622 transitions, 9119 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:19,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:19,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:19,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:21,867 INFO L124 PetriNetUnfolderBase]: 4775/7343 cut-off events. [2024-06-28 03:20:21,867 INFO L125 PetriNetUnfolderBase]: For 1160164/1160167 co-relation queries the response was YES. [2024-06-28 03:20:21,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77902 conditions, 7343 events. 4775/7343 cut-off events. For 1160164/1160167 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 42006 event pairs, 1296 based on Foata normal form. 10/7349 useless extension candidates. Maximal degree in co-relation 77756. Up to 6669 conditions per place. [2024-06-28 03:20:21,984 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 569 selfloop transitions, 90 changer transitions 0/666 dead transitions. [2024-06-28 03:20:21,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 666 transitions, 10652 flow [2024-06-28 03:20:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:20:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:20:21,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 228 transitions. [2024-06-28 03:20:21,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:20:21,985 INFO L175 Difference]: Start difference. First operand has 327 places, 622 transitions, 9119 flow. Second operand 12 states and 228 transitions. [2024-06-28 03:20:21,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 666 transitions, 10652 flow [2024-06-28 03:20:23,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 666 transitions, 10203 flow, removed 150 selfloop flow, removed 11 redundant places. [2024-06-28 03:20:23,737 INFO L231 Difference]: Finished difference. Result has 328 places, 622 transitions, 8866 flow [2024-06-28 03:20:23,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8670, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8866, PETRI_PLACES=328, PETRI_TRANSITIONS=622} [2024-06-28 03:20:23,737 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 283 predicate places. [2024-06-28 03:20:23,738 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 622 transitions, 8866 flow [2024-06-28 03:20:23,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:23,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:23,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:23,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:20:23,738 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:23,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:23,739 INFO L85 PathProgramCache]: Analyzing trace with hash 899612734, now seen corresponding path program 8 times [2024-06-28 03:20:23,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:23,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380912861] [2024-06-28 03:20:23,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:23,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:24,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:24,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380912861] [2024-06-28 03:20:24,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380912861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:24,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:24,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:24,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198230345] [2024-06-28 03:20:24,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:24,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:24,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:24,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:24,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:25,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:25,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 622 transitions, 8866 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:25,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:25,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:25,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:26,953 INFO L124 PetriNetUnfolderBase]: 4792/7379 cut-off events. [2024-06-28 03:20:26,953 INFO L125 PetriNetUnfolderBase]: For 1172846/1172853 co-relation queries the response was YES. [2024-06-28 03:20:27,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78085 conditions, 7379 events. 4792/7379 cut-off events. For 1172846/1172853 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 42322 event pairs, 1339 based on Foata normal form. 8/7384 useless extension candidates. Maximal degree in co-relation 77938. Up to 6613 conditions per place. [2024-06-28 03:20:27,061 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 510 selfloop transitions, 144 changer transitions 0/661 dead transitions. [2024-06-28 03:20:27,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 661 transitions, 10520 flow [2024-06-28 03:20:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:20:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:20:27,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 03:20:27,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44421487603305787 [2024-06-28 03:20:27,076 INFO L175 Difference]: Start difference. First operand has 328 places, 622 transitions, 8866 flow. Second operand 11 states and 215 transitions. [2024-06-28 03:20:27,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 661 transitions, 10520 flow [2024-06-28 03:20:29,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 661 transitions, 10294 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-28 03:20:29,042 INFO L231 Difference]: Finished difference. Result has 328 places, 624 transitions, 9035 flow [2024-06-28 03:20:29,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8640, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9035, PETRI_PLACES=328, PETRI_TRANSITIONS=624} [2024-06-28 03:20:29,043 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 283 predicate places. [2024-06-28 03:20:29,043 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 624 transitions, 9035 flow [2024-06-28 03:20:29,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:29,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:29,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:29,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:20:29,043 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:29,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash 899464864, now seen corresponding path program 9 times [2024-06-28 03:20:29,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:29,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203053957] [2024-06-28 03:20:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:29,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:30,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:30,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203053957] [2024-06-28 03:20:30,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203053957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:30,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:30,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:30,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855217367] [2024-06-28 03:20:30,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:30,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:30,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:30,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:30,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:30,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 624 transitions, 9035 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:30,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:30,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:30,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:32,199 INFO L124 PetriNetUnfolderBase]: 4834/7440 cut-off events. [2024-06-28 03:20:32,199 INFO L125 PetriNetUnfolderBase]: For 1220666/1220673 co-relation queries the response was YES. [2024-06-28 03:20:32,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79835 conditions, 7440 events. 4834/7440 cut-off events. For 1220666/1220673 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 42694 event pairs, 1341 based on Foata normal form. 8/7445 useless extension candidates. Maximal degree in co-relation 79687. Up to 6582 conditions per place. [2024-06-28 03:20:32,311 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 504 selfloop transitions, 157 changer transitions 0/668 dead transitions. [2024-06-28 03:20:32,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 668 transitions, 11103 flow [2024-06-28 03:20:32,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:20:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:20:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 03:20:32,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524793388429752 [2024-06-28 03:20:32,313 INFO L175 Difference]: Start difference. First operand has 328 places, 624 transitions, 9035 flow. Second operand 11 states and 219 transitions. [2024-06-28 03:20:32,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 668 transitions, 11103 flow [2024-06-28 03:20:34,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 668 transitions, 10730 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 03:20:34,207 INFO L231 Difference]: Finished difference. Result has 331 places, 628 transitions, 9187 flow [2024-06-28 03:20:34,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8662, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9187, PETRI_PLACES=331, PETRI_TRANSITIONS=628} [2024-06-28 03:20:34,208 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 286 predicate places. [2024-06-28 03:20:34,208 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 628 transitions, 9187 flow [2024-06-28 03:20:34,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:34,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:34,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:34,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:20:34,209 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:34,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:34,209 INFO L85 PathProgramCache]: Analyzing trace with hash 899468584, now seen corresponding path program 10 times [2024-06-28 03:20:34,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:34,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043342235] [2024-06-28 03:20:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:34,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:35,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:35,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043342235] [2024-06-28 03:20:35,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043342235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:35,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:35,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:35,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317508391] [2024-06-28 03:20:35,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:35,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:35,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:35,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:35,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 628 transitions, 9187 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:35,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:35,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:35,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:37,553 INFO L124 PetriNetUnfolderBase]: 4851/7467 cut-off events. [2024-06-28 03:20:37,553 INFO L125 PetriNetUnfolderBase]: For 1254595/1254602 co-relation queries the response was YES. [2024-06-28 03:20:37,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80620 conditions, 7467 events. 4851/7467 cut-off events. For 1254595/1254602 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 42936 event pairs, 1341 based on Foata normal form. 8/7472 useless extension candidates. Maximal degree in co-relation 80471. Up to 6661 conditions per place. [2024-06-28 03:20:37,664 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 509 selfloop transitions, 155 changer transitions 0/671 dead transitions. [2024-06-28 03:20:37,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 671 transitions, 10901 flow [2024-06-28 03:20:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:20:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:20:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 233 transitions. [2024-06-28 03:20:37,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412878787878788 [2024-06-28 03:20:37,665 INFO L175 Difference]: Start difference. First operand has 331 places, 628 transitions, 9187 flow. Second operand 12 states and 233 transitions. [2024-06-28 03:20:37,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 671 transitions, 10901 flow [2024-06-28 03:20:39,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 671 transitions, 10545 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-06-28 03:20:39,701 INFO L231 Difference]: Finished difference. Result has 336 places, 630 transitions, 9259 flow [2024-06-28 03:20:39,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8873, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9259, PETRI_PLACES=336, PETRI_TRANSITIONS=630} [2024-06-28 03:20:39,702 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 291 predicate places. [2024-06-28 03:20:39,702 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 630 transitions, 9259 flow [2024-06-28 03:20:39,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:39,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:39,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:39,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:20:39,703 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:39,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash 904975114, now seen corresponding path program 11 times [2024-06-28 03:20:39,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:39,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181493485] [2024-06-28 03:20:39,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:39,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:40,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:40,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181493485] [2024-06-28 03:20:40,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181493485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:40,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:40,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:40,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862872696] [2024-06-28 03:20:40,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:40,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:40,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:40,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:40,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:41,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:41,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 630 transitions, 9259 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:41,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:41,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:41,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:43,166 INFO L124 PetriNetUnfolderBase]: 4843/7455 cut-off events. [2024-06-28 03:20:43,166 INFO L125 PetriNetUnfolderBase]: For 1265937/1265944 co-relation queries the response was YES. [2024-06-28 03:20:43,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80535 conditions, 7455 events. 4843/7455 cut-off events. For 1265937/1265944 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 42872 event pairs, 1344 based on Foata normal form. 8/7460 useless extension candidates. Maximal degree in co-relation 80384. Up to 6694 conditions per place. [2024-06-28 03:20:43,277 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 512 selfloop transitions, 148 changer transitions 0/667 dead transitions. [2024-06-28 03:20:43,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 667 transitions, 10829 flow [2024-06-28 03:20:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:20:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:20:43,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 03:20:43,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44214876033057854 [2024-06-28 03:20:43,280 INFO L175 Difference]: Start difference. First operand has 336 places, 630 transitions, 9259 flow. Second operand 11 states and 214 transitions. [2024-06-28 03:20:43,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 667 transitions, 10829 flow [2024-06-28 03:20:45,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 667 transitions, 10429 flow, removed 48 selfloop flow, removed 10 redundant places. [2024-06-28 03:20:45,396 INFO L231 Difference]: Finished difference. Result has 337 places, 630 transitions, 9162 flow [2024-06-28 03:20:45,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8859, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9162, PETRI_PLACES=337, PETRI_TRANSITIONS=630} [2024-06-28 03:20:45,397 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 292 predicate places. [2024-06-28 03:20:45,397 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 630 transitions, 9162 flow [2024-06-28 03:20:45,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:45,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:45,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:45,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:20:45,397 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:45,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:45,398 INFO L85 PathProgramCache]: Analyzing trace with hash 905182659, now seen corresponding path program 5 times [2024-06-28 03:20:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:45,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592209305] [2024-06-28 03:20:45,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:46,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:46,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:46,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592209305] [2024-06-28 03:20:46,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592209305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:46,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:46,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:46,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048246474] [2024-06-28 03:20:46,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:46,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:46,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:46,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:46,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:46,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 630 transitions, 9162 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:46,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:46,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:46,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:48,674 INFO L124 PetriNetUnfolderBase]: 4865/7482 cut-off events. [2024-06-28 03:20:48,674 INFO L125 PetriNetUnfolderBase]: For 1294317/1294324 co-relation queries the response was YES. [2024-06-28 03:20:48,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80913 conditions, 7482 events. 4865/7482 cut-off events. For 1294317/1294324 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 43103 event pairs, 1303 based on Foata normal form. 8/7487 useless extension candidates. Maximal degree in co-relation 80761. Up to 6290 conditions per place. [2024-06-28 03:20:48,805 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 438 selfloop transitions, 229 changer transitions 0/674 dead transitions. [2024-06-28 03:20:48,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 674 transitions, 10859 flow [2024-06-28 03:20:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:20:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:20:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 222 transitions. [2024-06-28 03:20:48,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45867768595041325 [2024-06-28 03:20:48,807 INFO L175 Difference]: Start difference. First operand has 337 places, 630 transitions, 9162 flow. Second operand 11 states and 222 transitions. [2024-06-28 03:20:48,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 674 transitions, 10859 flow [2024-06-28 03:20:50,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 674 transitions, 10542 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:20:50,763 INFO L231 Difference]: Finished difference. Result has 338 places, 633 transitions, 9379 flow [2024-06-28 03:20:50,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8845, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9379, PETRI_PLACES=338, PETRI_TRANSITIONS=633} [2024-06-28 03:20:50,764 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 293 predicate places. [2024-06-28 03:20:50,764 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 633 transitions, 9379 flow [2024-06-28 03:20:50,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:50,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:50,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:50,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:20:50,765 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:50,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:50,765 INFO L85 PathProgramCache]: Analyzing trace with hash 904980849, now seen corresponding path program 6 times [2024-06-28 03:20:50,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:50,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220009777] [2024-06-28 03:20:50,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:50,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:51,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:51,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220009777] [2024-06-28 03:20:51,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220009777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:51,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:51,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:51,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625569976] [2024-06-28 03:20:51,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:51,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:51,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:51,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:51,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:52,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:52,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 633 transitions, 9379 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:52,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:52,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:52,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:20:54,257 INFO L124 PetriNetUnfolderBase]: 4887/7518 cut-off events. [2024-06-28 03:20:54,257 INFO L125 PetriNetUnfolderBase]: For 1327470/1327477 co-relation queries the response was YES. [2024-06-28 03:20:54,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81995 conditions, 7518 events. 4887/7518 cut-off events. For 1327470/1327477 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 43346 event pairs, 1305 based on Foata normal form. 8/7523 useless extension candidates. Maximal degree in co-relation 81842. Up to 6322 conditions per place. [2024-06-28 03:20:54,390 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 447 selfloop transitions, 224 changer transitions 0/678 dead transitions. [2024-06-28 03:20:54,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 678 transitions, 11098 flow [2024-06-28 03:20:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:20:54,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:20:54,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 224 transitions. [2024-06-28 03:20:54,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628099173553719 [2024-06-28 03:20:54,392 INFO L175 Difference]: Start difference. First operand has 338 places, 633 transitions, 9379 flow. Second operand 11 states and 224 transitions. [2024-06-28 03:20:54,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 678 transitions, 11098 flow [2024-06-28 03:20:56,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 678 transitions, 10594 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 03:20:56,810 INFO L231 Difference]: Finished difference. Result has 340 places, 636 transitions, 9405 flow [2024-06-28 03:20:56,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8875, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9405, PETRI_PLACES=340, PETRI_TRANSITIONS=636} [2024-06-28 03:20:56,811 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 295 predicate places. [2024-06-28 03:20:56,811 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 636 transitions, 9405 flow [2024-06-28 03:20:56,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:56,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:20:56,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:20:56,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:20:56,811 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:20:56,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:20:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash 904975269, now seen corresponding path program 7 times [2024-06-28 03:20:56,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:20:56,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645182140] [2024-06-28 03:20:56,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:20:56,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:20:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:20:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:20:57,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:20:57,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645182140] [2024-06-28 03:20:57,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645182140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:20:57,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:20:57,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:20:57,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74069808] [2024-06-28 03:20:57,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:20:57,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:20:57,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:20:57,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:20:57,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:20:57,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:20:57,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 636 transitions, 9405 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:20:57,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:20:57,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:20:57,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:00,304 INFO L124 PetriNetUnfolderBase]: 4887/7526 cut-off events. [2024-06-28 03:21:00,305 INFO L125 PetriNetUnfolderBase]: For 1344072/1344079 co-relation queries the response was YES. [2024-06-28 03:21:00,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81977 conditions, 7526 events. 4887/7526 cut-off events. For 1344072/1344079 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 43463 event pairs, 1267 based on Foata normal form. 8/7528 useless extension candidates. Maximal degree in co-relation 81823. Up to 6251 conditions per place. [2024-06-28 03:21:00,404 INFO L140 encePairwiseOnDemand]: 28/44 looper letters, 443 selfloop transitions, 233 changer transitions 0/683 dead transitions. [2024-06-28 03:21:00,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 683 transitions, 11106 flow [2024-06-28 03:21:00,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:21:00,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:21:00,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 243 transitions. [2024-06-28 03:21:00,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602272727272727 [2024-06-28 03:21:00,406 INFO L175 Difference]: Start difference. First operand has 340 places, 636 transitions, 9405 flow. Second operand 12 states and 243 transitions. [2024-06-28 03:21:00,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 683 transitions, 11106 flow [2024-06-28 03:21:02,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 683 transitions, 10564 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 03:21:02,572 INFO L231 Difference]: Finished difference. Result has 343 places, 636 transitions, 9341 flow [2024-06-28 03:21:02,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8863, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9341, PETRI_PLACES=343, PETRI_TRANSITIONS=636} [2024-06-28 03:21:02,572 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 298 predicate places. [2024-06-28 03:21:02,572 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 636 transitions, 9341 flow [2024-06-28 03:21:02,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:02,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:02,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:02,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:21:02,573 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:02,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:02,573 INFO L85 PathProgramCache]: Analyzing trace with hash 2011862260, now seen corresponding path program 1 times [2024-06-28 03:21:02,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:02,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376465562] [2024-06-28 03:21:02,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:02,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:03,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:03,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376465562] [2024-06-28 03:21:03,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376465562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:03,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:03,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:21:03,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182036579] [2024-06-28 03:21:03,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:03,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:21:03,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:03,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:21:03,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:21:03,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:03,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 636 transitions, 9341 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:03,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:03,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:03,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:05,406 INFO L124 PetriNetUnfolderBase]: 5076/7787 cut-off events. [2024-06-28 03:21:05,406 INFO L125 PetriNetUnfolderBase]: For 1408542/1408582 co-relation queries the response was YES. [2024-06-28 03:21:05,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83985 conditions, 7787 events. 5076/7787 cut-off events. For 1408542/1408582 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 44485 event pairs, 1576 based on Foata normal form. 7/7759 useless extension candidates. Maximal degree in co-relation 83830. Up to 7043 conditions per place. [2024-06-28 03:21:05,517 INFO L140 encePairwiseOnDemand]: 33/44 looper letters, 512 selfloop transitions, 43 changer transitions 0/661 dead transitions. [2024-06-28 03:21:05,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 661 transitions, 10785 flow [2024-06-28 03:21:05,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:21:05,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:21:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 03:21:05,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-28 03:21:05,519 INFO L175 Difference]: Start difference. First operand has 343 places, 636 transitions, 9341 flow. Second operand 8 states and 151 transitions. [2024-06-28 03:21:05,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 661 transitions, 10785 flow [2024-06-28 03:21:07,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 661 transitions, 10235 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-06-28 03:21:07,919 INFO L231 Difference]: Finished difference. Result has 340 places, 642 transitions, 8971 flow [2024-06-28 03:21:07,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8801, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8971, PETRI_PLACES=340, PETRI_TRANSITIONS=642} [2024-06-28 03:21:07,920 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 295 predicate places. [2024-06-28 03:21:07,920 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 642 transitions, 8971 flow [2024-06-28 03:21:07,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:07,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:07,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:07,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:21:07,920 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:07,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:07,921 INFO L85 PathProgramCache]: Analyzing trace with hash -443737642, now seen corresponding path program 12 times [2024-06-28 03:21:07,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:07,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697831650] [2024-06-28 03:21:07,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:07,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:09,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:09,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697831650] [2024-06-28 03:21:09,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697831650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:09,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:09,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:21:09,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217666005] [2024-06-28 03:21:09,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:09,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:21:09,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:09,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:21:09,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:21:09,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:09,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 642 transitions, 8971 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:09,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:09,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:09,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:11,360 INFO L124 PetriNetUnfolderBase]: 4923/7552 cut-off events. [2024-06-28 03:21:11,360 INFO L125 PetriNetUnfolderBase]: For 1329865/1329893 co-relation queries the response was YES. [2024-06-28 03:21:11,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80722 conditions, 7552 events. 4923/7552 cut-off events. For 1329865/1329893 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 43547 event pairs, 1047 based on Foata normal form. 12/7549 useless extension candidates. Maximal degree in co-relation 80566. Up to 6119 conditions per place. [2024-06-28 03:21:11,488 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 495 selfloop transitions, 189 changer transitions 0/693 dead transitions. [2024-06-28 03:21:11,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 693 transitions, 11079 flow [2024-06-28 03:21:11,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:21:11,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:21:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-28 03:21:11,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4462809917355372 [2024-06-28 03:21:11,489 INFO L175 Difference]: Start difference. First operand has 340 places, 642 transitions, 8971 flow. Second operand 11 states and 216 transitions. [2024-06-28 03:21:11,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 693 transitions, 11079 flow [2024-06-28 03:21:13,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 693 transitions, 11003 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 03:21:13,597 INFO L231 Difference]: Finished difference. Result has 347 places, 646 transitions, 9437 flow [2024-06-28 03:21:13,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=8895, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9437, PETRI_PLACES=347, PETRI_TRANSITIONS=646} [2024-06-28 03:21:13,598 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 302 predicate places. [2024-06-28 03:21:13,598 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 646 transitions, 9437 flow [2024-06-28 03:21:13,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:13,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:13,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:13,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:21:13,598 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:13,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash -441859972, now seen corresponding path program 13 times [2024-06-28 03:21:13,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:13,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286058827] [2024-06-28 03:21:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:14,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:14,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286058827] [2024-06-28 03:21:14,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286058827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:14,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:14,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:21:14,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402204524] [2024-06-28 03:21:14,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:14,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:21:14,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:14,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:21:14,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:21:14,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:14,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 646 transitions, 9437 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:14,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:14,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:14,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:16,939 INFO L124 PetriNetUnfolderBase]: 4952/7615 cut-off events. [2024-06-28 03:21:16,940 INFO L125 PetriNetUnfolderBase]: For 1362870/1362893 co-relation queries the response was YES. [2024-06-28 03:21:17,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82615 conditions, 7615 events. 4952/7615 cut-off events. For 1362870/1362893 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 44069 event pairs, 1383 based on Foata normal form. 10/7612 useless extension candidates. Maximal degree in co-relation 82457. Up to 6843 conditions per place. [2024-06-28 03:21:17,061 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 558 selfloop transitions, 130 changer transitions 0/697 dead transitions. [2024-06-28 03:21:17,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 697 transitions, 11322 flow [2024-06-28 03:21:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:21:17,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:21:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 226 transitions. [2024-06-28 03:21:17,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-28 03:21:17,062 INFO L175 Difference]: Start difference. First operand has 347 places, 646 transitions, 9437 flow. Second operand 12 states and 226 transitions. [2024-06-28 03:21:17,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 697 transitions, 11322 flow [2024-06-28 03:21:19,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 697 transitions, 10920 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-28 03:21:19,604 INFO L231 Difference]: Finished difference. Result has 350 places, 652 transitions, 9547 flow [2024-06-28 03:21:19,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9041, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9547, PETRI_PLACES=350, PETRI_TRANSITIONS=652} [2024-06-28 03:21:19,605 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 305 predicate places. [2024-06-28 03:21:19,605 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 652 transitions, 9547 flow [2024-06-28 03:21:19,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:19,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:19,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:19,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:21:19,606 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:19,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:19,606 INFO L85 PathProgramCache]: Analyzing trace with hash -441859817, now seen corresponding path program 8 times [2024-06-28 03:21:19,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:19,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132376211] [2024-06-28 03:21:19,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:19,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:20,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:20,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132376211] [2024-06-28 03:21:20,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132376211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:20,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:20,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:21:20,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139508911] [2024-06-28 03:21:20,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:20,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:21:20,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:20,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:21:20,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:21:20,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:20,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 652 transitions, 9547 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:20,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:20,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:20,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:22,762 INFO L124 PetriNetUnfolderBase]: 5168/7962 cut-off events. [2024-06-28 03:21:22,763 INFO L125 PetriNetUnfolderBase]: For 1304860/1304883 co-relation queries the response was YES. [2024-06-28 03:21:22,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84538 conditions, 7962 events. 5168/7962 cut-off events. For 1304860/1304883 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 46571 event pairs, 1326 based on Foata normal form. 8/7961 useless extension candidates. Maximal degree in co-relation 84380. Up to 6861 conditions per place. [2024-06-28 03:21:22,892 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 554 selfloop transitions, 192 changer transitions 0/755 dead transitions. [2024-06-28 03:21:22,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 755 transitions, 12760 flow [2024-06-28 03:21:22,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:21:22,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:21:22,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 219 transitions. [2024-06-28 03:21:22,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524793388429752 [2024-06-28 03:21:22,894 INFO L175 Difference]: Start difference. First operand has 350 places, 652 transitions, 9547 flow. Second operand 11 states and 219 transitions. [2024-06-28 03:21:22,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 755 transitions, 12760 flow [2024-06-28 03:21:25,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 755 transitions, 12274 flow, removed 80 selfloop flow, removed 12 redundant places. [2024-06-28 03:21:25,022 INFO L231 Difference]: Finished difference. Result has 351 places, 706 transitions, 10587 flow [2024-06-28 03:21:25,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9140, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10587, PETRI_PLACES=351, PETRI_TRANSITIONS=706} [2024-06-28 03:21:25,023 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 306 predicate places. [2024-06-28 03:21:25,023 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 706 transitions, 10587 flow [2024-06-28 03:21:25,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:25,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:25,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:25,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:21:25,024 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:25,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:25,024 INFO L85 PathProgramCache]: Analyzing trace with hash -441863692, now seen corresponding path program 14 times [2024-06-28 03:21:25,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:25,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933808909] [2024-06-28 03:21:25,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:25,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:26,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:26,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933808909] [2024-06-28 03:21:26,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933808909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:26,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:26,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:21:26,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307303414] [2024-06-28 03:21:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:26,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:21:26,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:26,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:21:26,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:21:26,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:26,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 706 transitions, 10587 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:26,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:26,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:26,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:28,350 INFO L124 PetriNetUnfolderBase]: 5519/8521 cut-off events. [2024-06-28 03:21:28,351 INFO L125 PetriNetUnfolderBase]: For 1284353/1284376 co-relation queries the response was YES. [2024-06-28 03:21:28,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87772 conditions, 8521 events. 5519/8521 cut-off events. For 1284353/1284376 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 50894 event pairs, 1422 based on Foata normal form. 10/8516 useless extension candidates. Maximal degree in co-relation 87613. Up to 7392 conditions per place. [2024-06-28 03:21:28,505 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 612 selfloop transitions, 184 changer transitions 0/805 dead transitions. [2024-06-28 03:21:28,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 805 transitions, 13383 flow [2024-06-28 03:21:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:21:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:21:28,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 03:21:28,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44214876033057854 [2024-06-28 03:21:28,506 INFO L175 Difference]: Start difference. First operand has 351 places, 706 transitions, 10587 flow. Second operand 11 states and 214 transitions. [2024-06-28 03:21:28,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 805 transitions, 13383 flow [2024-06-28 03:21:30,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 805 transitions, 12897 flow, removed 128 selfloop flow, removed 6 redundant places. [2024-06-28 03:21:30,799 INFO L231 Difference]: Finished difference. Result has 357 places, 760 transitions, 11566 flow [2024-06-28 03:21:30,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=10101, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11566, PETRI_PLACES=357, PETRI_TRANSITIONS=760} [2024-06-28 03:21:30,800 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 312 predicate places. [2024-06-28 03:21:30,800 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 760 transitions, 11566 flow [2024-06-28 03:21:30,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:30,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:30,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:30,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:21:30,800 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:30,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:30,801 INFO L85 PathProgramCache]: Analyzing trace with hash -355018277, now seen corresponding path program 9 times [2024-06-28 03:21:30,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:30,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916679784] [2024-06-28 03:21:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:30,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:31,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:31,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916679784] [2024-06-28 03:21:31,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916679784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:31,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:31,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:21:31,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743546766] [2024-06-28 03:21:31,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:31,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:21:31,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:21:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:21:32,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:32,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 760 transitions, 11566 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:32,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:32,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:32,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:34,161 INFO L124 PetriNetUnfolderBase]: 5591/8624 cut-off events. [2024-06-28 03:21:34,161 INFO L125 PetriNetUnfolderBase]: For 1309387/1309410 co-relation queries the response was YES. [2024-06-28 03:21:34,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89143 conditions, 8624 events. 5591/8624 cut-off events. For 1309387/1309410 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 51602 event pairs, 1533 based on Foata normal form. 8/8623 useless extension candidates. Maximal degree in co-relation 88982. Up to 7879 conditions per place. [2024-06-28 03:21:34,299 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 693 selfloop transitions, 108 changer transitions 0/810 dead transitions. [2024-06-28 03:21:34,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 810 transitions, 13706 flow [2024-06-28 03:21:34,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:21:34,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:21:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:21:34,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340909090909091 [2024-06-28 03:21:34,301 INFO L175 Difference]: Start difference. First operand has 357 places, 760 transitions, 11566 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:21:34,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 810 transitions, 13706 flow [2024-06-28 03:21:36,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 810 transitions, 13279 flow, removed 84 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:36,783 INFO L231 Difference]: Finished difference. Result has 359 places, 772 transitions, 11647 flow [2024-06-28 03:21:36,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11139, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11647, PETRI_PLACES=359, PETRI_TRANSITIONS=772} [2024-06-28 03:21:36,783 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 314 predicate places. [2024-06-28 03:21:36,784 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 772 transitions, 11647 flow [2024-06-28 03:21:36,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:36,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:36,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:36,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:21:36,784 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:36,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:36,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1489479521, now seen corresponding path program 10 times [2024-06-28 03:21:36,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:36,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38873191] [2024-06-28 03:21:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:36,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:36,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:38,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:38,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38873191] [2024-06-28 03:21:38,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38873191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:38,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:38,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:21:38,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537090563] [2024-06-28 03:21:38,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:38,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:21:38,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:38,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:21:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:21:38,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:38,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 772 transitions, 11647 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:38,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:38,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:38,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:40,542 INFO L124 PetriNetUnfolderBase]: 5753/8882 cut-off events. [2024-06-28 03:21:40,542 INFO L125 PetriNetUnfolderBase]: For 1342577/1342600 co-relation queries the response was YES. [2024-06-28 03:21:40,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91125 conditions, 8882 events. 5753/8882 cut-off events. For 1342577/1342600 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 53488 event pairs, 1542 based on Foata normal form. 8/8881 useless extension candidates. Maximal degree in co-relation 90964. Up to 7987 conditions per place. [2024-06-28 03:21:40,682 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 698 selfloop transitions, 144 changer transitions 0/851 dead transitions. [2024-06-28 03:21:40,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 851 transitions, 14319 flow [2024-06-28 03:21:40,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:21:40,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:21:40,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 03:21:40,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297520661157025 [2024-06-28 03:21:40,684 INFO L175 Difference]: Start difference. First operand has 359 places, 772 transitions, 11647 flow. Second operand 11 states and 208 transitions. [2024-06-28 03:21:40,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 851 transitions, 14319 flow [2024-06-28 03:21:43,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 851 transitions, 14005 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:43,654 INFO L231 Difference]: Finished difference. Result has 363 places, 808 transitions, 12407 flow [2024-06-28 03:21:43,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11333, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12407, PETRI_PLACES=363, PETRI_TRANSITIONS=808} [2024-06-28 03:21:43,655 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 318 predicate places. [2024-06-28 03:21:43,655 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 808 transitions, 12407 flow [2024-06-28 03:21:43,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:43,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:43,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:43,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:21:43,656 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:43,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:43,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1489331496, now seen corresponding path program 15 times [2024-06-28 03:21:43,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:43,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594810036] [2024-06-28 03:21:43,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:43,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:44,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:44,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594810036] [2024-06-28 03:21:44,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594810036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:44,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:44,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:21:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641090221] [2024-06-28 03:21:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:21:44,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:44,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:21:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:21:45,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:45,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 808 transitions, 12407 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:45,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:45,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:45,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:47,396 INFO L124 PetriNetUnfolderBase]: 5735/8849 cut-off events. [2024-06-28 03:21:47,396 INFO L125 PetriNetUnfolderBase]: For 1353117/1353140 co-relation queries the response was YES. [2024-06-28 03:21:47,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90883 conditions, 8849 events. 5735/8849 cut-off events. For 1353117/1353140 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 53246 event pairs, 1482 based on Foata normal form. 10/8844 useless extension candidates. Maximal degree in co-relation 90720. Up to 7782 conditions per place. [2024-06-28 03:21:47,561 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 678 selfloop transitions, 160 changer transitions 0/847 dead transitions. [2024-06-28 03:21:47,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 847 transitions, 14339 flow [2024-06-28 03:21:47,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:21:47,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:21:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 03:21:47,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-06-28 03:21:47,562 INFO L175 Difference]: Start difference. First operand has 363 places, 808 transitions, 12407 flow. Second operand 10 states and 192 transitions. [2024-06-28 03:21:47,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 847 transitions, 14339 flow [2024-06-28 03:21:50,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 847 transitions, 13837 flow, removed 144 selfloop flow, removed 8 redundant places. [2024-06-28 03:21:50,975 INFO L231 Difference]: Finished difference. Result has 365 places, 808 transitions, 12256 flow [2024-06-28 03:21:50,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11905, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12256, PETRI_PLACES=365, PETRI_TRANSITIONS=808} [2024-06-28 03:21:50,976 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 320 predicate places. [2024-06-28 03:21:50,976 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 808 transitions, 12256 flow [2024-06-28 03:21:50,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:50,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:50,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:50,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:21:50,977 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:50,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:50,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1489335371, now seen corresponding path program 11 times [2024-06-28 03:21:50,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:50,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808508970] [2024-06-28 03:21:50,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:50,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:52,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:52,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808508970] [2024-06-28 03:21:52,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808508970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:52,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:52,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:21:52,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711529930] [2024-06-28 03:21:52,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:52,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:21:52,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:21:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:21:52,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:52,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 808 transitions, 12256 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:52,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:52,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:52,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:21:54,472 INFO L124 PetriNetUnfolderBase]: 5719/8840 cut-off events. [2024-06-28 03:21:54,472 INFO L125 PetriNetUnfolderBase]: For 1322085/1322108 co-relation queries the response was YES. [2024-06-28 03:21:54,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89770 conditions, 8840 events. 5719/8840 cut-off events. For 1322085/1322108 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 53266 event pairs, 1498 based on Foata normal form. 8/8839 useless extension candidates. Maximal degree in co-relation 89606. Up to 7771 conditions per place. [2024-06-28 03:21:54,613 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 662 selfloop transitions, 180 changer transitions 0/851 dead transitions. [2024-06-28 03:21:54,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 851 transitions, 14324 flow [2024-06-28 03:21:54,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:21:54,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:21:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:21:54,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-28 03:21:54,615 INFO L175 Difference]: Start difference. First operand has 365 places, 808 transitions, 12256 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:21:54,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 851 transitions, 14324 flow [2024-06-28 03:21:57,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 851 transitions, 13575 flow, removed 154 selfloop flow, removed 9 redundant places. [2024-06-28 03:21:57,281 INFO L231 Difference]: Finished difference. Result has 366 places, 808 transitions, 11895 flow [2024-06-28 03:21:57,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11507, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11895, PETRI_PLACES=366, PETRI_TRANSITIONS=808} [2024-06-28 03:21:57,282 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 321 predicate places. [2024-06-28 03:21:57,282 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 808 transitions, 11895 flow [2024-06-28 03:21:57,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:57,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:21:57,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:21:57,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:21:57,283 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:21:57,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:21:57,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1075965038, now seen corresponding path program 16 times [2024-06-28 03:21:57,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:21:57,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749742252] [2024-06-28 03:21:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:21:57,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:21:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:21:58,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:21:58,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:21:58,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749742252] [2024-06-28 03:21:58,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749742252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:21:58,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:21:58,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:21:58,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849900299] [2024-06-28 03:21:58,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:21:58,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:21:58,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:21:58,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:21:58,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:21:58,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:21:58,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 808 transitions, 11895 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:21:58,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:21:58,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:21:58,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:01,035 INFO L124 PetriNetUnfolderBase]: 5736/8866 cut-off events. [2024-06-28 03:22:01,035 INFO L125 PetriNetUnfolderBase]: For 1339398/1339425 co-relation queries the response was YES. [2024-06-28 03:22:01,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89612 conditions, 8866 events. 5736/8866 cut-off events. For 1339398/1339425 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 53451 event pairs, 1473 based on Foata normal form. 8/8864 useless extension candidates. Maximal degree in co-relation 89448. Up to 7999 conditions per place. [2024-06-28 03:22:01,164 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 692 selfloop transitions, 147 changer transitions 0/848 dead transitions. [2024-06-28 03:22:01,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 848 transitions, 14015 flow [2024-06-28 03:22:01,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:01,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 03:22:01,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409090909090909 [2024-06-28 03:22:01,166 INFO L175 Difference]: Start difference. First operand has 366 places, 808 transitions, 11895 flow. Second operand 10 states and 194 transitions. [2024-06-28 03:22:01,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 848 transitions, 14015 flow [2024-06-28 03:22:03,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 848 transitions, 13425 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-28 03:22:03,669 INFO L231 Difference]: Finished difference. Result has 366 places, 810 transitions, 11713 flow [2024-06-28 03:22:03,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11305, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11713, PETRI_PLACES=366, PETRI_TRANSITIONS=810} [2024-06-28 03:22:03,669 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 321 predicate places. [2024-06-28 03:22:03,669 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 810 transitions, 11713 flow [2024-06-28 03:22:03,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:03,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:03,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:03,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:22:03,670 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:03,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash 768538495, now seen corresponding path program 12 times [2024-06-28 03:22:03,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:03,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664590636] [2024-06-28 03:22:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:03,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:04,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:04,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664590636] [2024-06-28 03:22:04,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664590636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:04,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:04,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:04,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324392814] [2024-06-28 03:22:04,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:04,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:04,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:04,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:04,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:04,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:04,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 810 transitions, 11713 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:04,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:04,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:04,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:07,217 INFO L124 PetriNetUnfolderBase]: 5780/8935 cut-off events. [2024-06-28 03:22:07,218 INFO L125 PetriNetUnfolderBase]: For 1372478/1372505 co-relation queries the response was YES. [2024-06-28 03:22:07,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90115 conditions, 8935 events. 5780/8935 cut-off events. For 1372478/1372505 co-relation queries the response was YES. Maximal size of possible extension queue 508. Compared 53967 event pairs, 1416 based on Foata normal form. 8/8933 useless extension candidates. Maximal degree in co-relation 89952. Up to 7449 conditions per place. [2024-06-28 03:22:07,383 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 594 selfloop transitions, 266 changer transitions 0/869 dead transitions. [2024-06-28 03:22:07,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 869 transitions, 14100 flow [2024-06-28 03:22:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:22:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:22:07,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 220 transitions. [2024-06-28 03:22:07,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:22:07,384 INFO L175 Difference]: Start difference. First operand has 366 places, 810 transitions, 11713 flow. Second operand 11 states and 220 transitions. [2024-06-28 03:22:07,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 869 transitions, 14100 flow [2024-06-28 03:22:09,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 869 transitions, 13724 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:09,877 INFO L231 Difference]: Finished difference. Result has 369 places, 816 transitions, 12038 flow [2024-06-28 03:22:09,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11337, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12038, PETRI_PLACES=369, PETRI_TRANSITIONS=816} [2024-06-28 03:22:09,877 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 324 predicate places. [2024-06-28 03:22:09,877 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 816 transitions, 12038 flow [2024-06-28 03:22:09,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:09,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:09,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:09,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:22:09,878 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:09,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:09,878 INFO L85 PathProgramCache]: Analyzing trace with hash 768394345, now seen corresponding path program 13 times [2024-06-28 03:22:09,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:09,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380680039] [2024-06-28 03:22:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:09,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:11,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:11,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380680039] [2024-06-28 03:22:11,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380680039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:11,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:11,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144924620] [2024-06-28 03:22:11,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:11,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:11,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:11,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:11,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:11,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:11,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 816 transitions, 12038 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:11,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:11,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:11,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:13,409 INFO L124 PetriNetUnfolderBase]: 5830/9013 cut-off events. [2024-06-28 03:22:13,409 INFO L125 PetriNetUnfolderBase]: For 1422518/1422547 co-relation queries the response was YES. [2024-06-28 03:22:13,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92597 conditions, 9013 events. 5830/9013 cut-off events. For 1422518/1422547 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 54563 event pairs, 1394 based on Foata normal form. 8/9011 useless extension candidates. Maximal degree in co-relation 92433. Up to 7274 conditions per place. [2024-06-28 03:22:13,570 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 570 selfloop transitions, 297 changer transitions 0/876 dead transitions. [2024-06-28 03:22:13,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 876 transitions, 15248 flow [2024-06-28 03:22:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:13,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:13,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2024-06-28 03:22:13,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-28 03:22:13,572 INFO L175 Difference]: Start difference. First operand has 369 places, 816 transitions, 12038 flow. Second operand 10 states and 210 transitions. [2024-06-28 03:22:13,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 876 transitions, 15248 flow [2024-06-28 03:22:16,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 876 transitions, 14614 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-28 03:22:16,336 INFO L231 Difference]: Finished difference. Result has 371 places, 825 transitions, 12511 flow [2024-06-28 03:22:16,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=11404, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12511, PETRI_PLACES=371, PETRI_TRANSITIONS=825} [2024-06-28 03:22:16,336 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 326 predicate places. [2024-06-28 03:22:16,336 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 825 transitions, 12511 flow [2024-06-28 03:22:16,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:16,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:16,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:16,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:22:16,337 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:16,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash 768394190, now seen corresponding path program 17 times [2024-06-28 03:22:16,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:16,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835512230] [2024-06-28 03:22:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:17,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:17,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:17,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835512230] [2024-06-28 03:22:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835512230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:17,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:17,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:17,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600953711] [2024-06-28 03:22:17,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:17,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:17,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:17,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:17,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:17,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:17,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 825 transitions, 12511 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:17,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:17,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:17,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:20,096 INFO L124 PetriNetUnfolderBase]: 5847/9049 cut-off events. [2024-06-28 03:22:20,096 INFO L125 PetriNetUnfolderBase]: For 1460961/1460990 co-relation queries the response was YES. [2024-06-28 03:22:20,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94239 conditions, 9049 events. 5847/9049 cut-off events. For 1460961/1460990 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 54897 event pairs, 1447 based on Foata normal form. 8/9042 useless extension candidates. Maximal degree in co-relation 94073. Up to 8104 conditions per place. [2024-06-28 03:22:20,237 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 693 selfloop transitions, 162 changer transitions 0/864 dead transitions. [2024-06-28 03:22:20,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 864 transitions, 14648 flow [2024-06-28 03:22:20,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:20,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 03:22:20,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-28 03:22:20,239 INFO L175 Difference]: Start difference. First operand has 371 places, 825 transitions, 12511 flow. Second operand 10 states and 195 transitions. [2024-06-28 03:22:20,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 864 transitions, 14648 flow [2024-06-28 03:22:22,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 864 transitions, 14296 flow, removed 88 selfloop flow, removed 5 redundant places. [2024-06-28 03:22:22,839 INFO L231 Difference]: Finished difference. Result has 376 places, 827 transitions, 12605 flow [2024-06-28 03:22:22,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12161, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12605, PETRI_PLACES=376, PETRI_TRANSITIONS=827} [2024-06-28 03:22:22,840 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 331 predicate places. [2024-06-28 03:22:22,840 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 827 transitions, 12605 flow [2024-06-28 03:22:22,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:22,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:22,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:22,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:22:22,840 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:22,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:22,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1076112908, now seen corresponding path program 18 times [2024-06-28 03:22:22,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:22,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83592844] [2024-06-28 03:22:22,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:22,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:23,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:23,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83592844] [2024-06-28 03:22:23,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83592844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:23,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:23,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:23,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151635981] [2024-06-28 03:22:23,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:23,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:23,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:23,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:23,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:24,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:24,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 827 transitions, 12605 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:24,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:24,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:24,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:26,298 INFO L124 PetriNetUnfolderBase]: 5924/9169 cut-off events. [2024-06-28 03:22:26,299 INFO L125 PetriNetUnfolderBase]: For 1505998/1506005 co-relation queries the response was YES. [2024-06-28 03:22:26,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95980 conditions, 9169 events. 5924/9169 cut-off events. For 1505998/1506005 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 55649 event pairs, 1403 based on Foata normal form. 8/9174 useless extension candidates. Maximal degree in co-relation 95812. Up to 8060 conditions per place. [2024-06-28 03:22:26,449 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 686 selfloop transitions, 176 changer transitions 0/871 dead transitions. [2024-06-28 03:22:26,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 871 transitions, 15202 flow [2024-06-28 03:22:26,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:26,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-06-28 03:22:26,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-28 03:22:26,450 INFO L175 Difference]: Start difference. First operand has 376 places, 827 transitions, 12605 flow. Second operand 10 states and 198 transitions. [2024-06-28 03:22:26,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 871 transitions, 15202 flow [2024-06-28 03:22:28,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 871 transitions, 14782 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:28,979 INFO L231 Difference]: Finished difference. Result has 378 places, 831 transitions, 12771 flow [2024-06-28 03:22:28,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12185, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12771, PETRI_PLACES=378, PETRI_TRANSITIONS=831} [2024-06-28 03:22:28,980 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 333 predicate places. [2024-06-28 03:22:28,980 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 831 transitions, 12771 flow [2024-06-28 03:22:28,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:28,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:28,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:28,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:22:28,982 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:28,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1070395113, now seen corresponding path program 14 times [2024-06-28 03:22:28,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:28,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065843740] [2024-06-28 03:22:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:28,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:30,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:30,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065843740] [2024-06-28 03:22:30,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065843740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:30,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:30,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:30,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671702336] [2024-06-28 03:22:30,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:30,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:30,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:30,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:30,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:30,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:30,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 831 transitions, 12771 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:30,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:30,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:30,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:32,578 INFO L124 PetriNetUnfolderBase]: 5946/9204 cut-off events. [2024-06-28 03:22:32,578 INFO L125 PetriNetUnfolderBase]: For 1540552/1540559 co-relation queries the response was YES. [2024-06-28 03:22:32,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96760 conditions, 9204 events. 5946/9204 cut-off events. For 1540552/1540559 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 55997 event pairs, 1363 based on Foata normal form. 8/9209 useless extension candidates. Maximal degree in co-relation 96591. Up to 7709 conditions per place. [2024-06-28 03:22:32,753 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 597 selfloop transitions, 275 changer transitions 0/881 dead transitions. [2024-06-28 03:22:32,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 881 transitions, 15074 flow [2024-06-28 03:22:32,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:32,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:32,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 200 transitions. [2024-06-28 03:22:32,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 03:22:32,754 INFO L175 Difference]: Start difference. First operand has 378 places, 831 transitions, 12771 flow. Second operand 10 states and 200 transitions. [2024-06-28 03:22:32,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 881 transitions, 15074 flow [2024-06-28 03:22:35,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 881 transitions, 14720 flow, removed 83 selfloop flow, removed 7 redundant places. [2024-06-28 03:22:35,334 INFO L231 Difference]: Finished difference. Result has 381 places, 834 transitions, 13083 flow [2024-06-28 03:22:35,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12419, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13083, PETRI_PLACES=381, PETRI_TRANSITIONS=834} [2024-06-28 03:22:35,335 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 336 predicate places. [2024-06-28 03:22:35,335 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 834 transitions, 13083 flow [2024-06-28 03:22:35,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:35,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:35,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:35,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:22:35,336 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:35,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:35,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1070596923, now seen corresponding path program 15 times [2024-06-28 03:22:35,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:35,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17582195] [2024-06-28 03:22:35,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:35,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:36,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:36,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17582195] [2024-06-28 03:22:36,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17582195] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:36,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:36,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:36,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826151847] [2024-06-28 03:22:36,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:36,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:36,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:36,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:36,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:36,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:36,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 834 transitions, 13083 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:36,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:36,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:36,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:39,457 INFO L124 PetriNetUnfolderBase]: 5933/9183 cut-off events. [2024-06-28 03:22:39,458 INFO L125 PetriNetUnfolderBase]: For 1501852/1501881 co-relation queries the response was YES. [2024-06-28 03:22:39,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96726 conditions, 9183 events. 5933/9183 cut-off events. For 1501852/1501881 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 55934 event pairs, 1399 based on Foata normal form. 8/9181 useless extension candidates. Maximal degree in co-relation 96556. Up to 7711 conditions per place. [2024-06-28 03:22:39,606 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 613 selfloop transitions, 266 changer transitions 0/888 dead transitions. [2024-06-28 03:22:39,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 888 transitions, 15470 flow [2024-06-28 03:22:39,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:39,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-28 03:22:39,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2024-06-28 03:22:39,608 INFO L175 Difference]: Start difference. First operand has 381 places, 834 transitions, 13083 flow. Second operand 10 states and 202 transitions. [2024-06-28 03:22:39,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 888 transitions, 15470 flow [2024-06-28 03:22:42,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 888 transitions, 14839 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-28 03:22:42,506 INFO L231 Difference]: Finished difference. Result has 381 places, 837 transitions, 13104 flow [2024-06-28 03:22:42,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12452, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13104, PETRI_PLACES=381, PETRI_TRANSITIONS=837} [2024-06-28 03:22:42,507 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 336 predicate places. [2024-06-28 03:22:42,507 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 837 transitions, 13104 flow [2024-06-28 03:22:42,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:42,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:42,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:42,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:22:42,508 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:42,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash 773900720, now seen corresponding path program 19 times [2024-06-28 03:22:42,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:42,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868186470] [2024-06-28 03:22:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:42,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:43,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:43,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:43,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868186470] [2024-06-28 03:22:43,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868186470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:43,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:43,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:43,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254549978] [2024-06-28 03:22:43,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:43,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:43,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:43,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:43,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:43,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:43,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 837 transitions, 13104 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:43,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:43,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:43,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:45,967 INFO L124 PetriNetUnfolderBase]: 5925/9162 cut-off events. [2024-06-28 03:22:45,967 INFO L125 PetriNetUnfolderBase]: For 1486722/1486751 co-relation queries the response was YES. [2024-06-28 03:22:46,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96074 conditions, 9162 events. 5925/9162 cut-off events. For 1486722/1486751 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 55625 event pairs, 1447 based on Foata normal form. 8/9155 useless extension candidates. Maximal degree in co-relation 95905. Up to 8282 conditions per place. [2024-06-28 03:22:46,139 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 713 selfloop transitions, 153 changer transitions 0/875 dead transitions. [2024-06-28 03:22:46,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 875 transitions, 15178 flow [2024-06-28 03:22:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:22:46,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:22:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 03:22:46,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-28 03:22:46,140 INFO L175 Difference]: Start difference. First operand has 381 places, 837 transitions, 13104 flow. Second operand 10 states and 193 transitions. [2024-06-28 03:22:46,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 875 transitions, 15178 flow [2024-06-28 03:22:49,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 875 transitions, 14528 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 03:22:49,036 INFO L231 Difference]: Finished difference. Result has 383 places, 837 transitions, 12770 flow [2024-06-28 03:22:49,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12454, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=684, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12770, PETRI_PLACES=383, PETRI_TRANSITIONS=837} [2024-06-28 03:22:49,038 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 338 predicate places. [2024-06-28 03:22:49,038 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 837 transitions, 12770 flow [2024-06-28 03:22:49,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:49,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:49,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:49,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:22:49,039 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:49,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:49,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1070602503, now seen corresponding path program 16 times [2024-06-28 03:22:49,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:49,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776477946] [2024-06-28 03:22:49,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:49,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:50,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:50,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776477946] [2024-06-28 03:22:50,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776477946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:50,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:50,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:22:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377940820] [2024-06-28 03:22:50,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:50,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:22:50,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:22:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:22:50,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:50,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 837 transitions, 12770 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:50,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:50,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:50,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:52,653 INFO L124 PetriNetUnfolderBase]: 5950/9211 cut-off events. [2024-06-28 03:22:52,654 INFO L125 PetriNetUnfolderBase]: For 1501460/1501467 co-relation queries the response was YES. [2024-06-28 03:22:52,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95531 conditions, 9211 events. 5950/9211 cut-off events. For 1501460/1501467 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 56023 event pairs, 1359 based on Foata normal form. 8/9216 useless extension candidates. Maximal degree in co-relation 95361. Up to 7606 conditions per place. [2024-06-28 03:22:52,812 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 600 selfloop transitions, 284 changer transitions 0/893 dead transitions. [2024-06-28 03:22:52,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 893 transitions, 15107 flow [2024-06-28 03:22:52,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:22:52,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:22:52,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 221 transitions. [2024-06-28 03:22:52,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45661157024793386 [2024-06-28 03:22:52,813 INFO L175 Difference]: Start difference. First operand has 383 places, 837 transitions, 12770 flow. Second operand 11 states and 221 transitions. [2024-06-28 03:22:52,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 893 transitions, 15107 flow [2024-06-28 03:22:55,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 893 transitions, 14714 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-28 03:22:55,859 INFO L231 Difference]: Finished difference. Result has 384 places, 837 transitions, 12967 flow [2024-06-28 03:22:55,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12377, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12967, PETRI_PLACES=384, PETRI_TRANSITIONS=837} [2024-06-28 03:22:55,859 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 339 predicate places. [2024-06-28 03:22:55,859 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 837 transitions, 12967 flow [2024-06-28 03:22:55,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:55,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:22:55,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:22:55,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:22:55,860 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:22:55,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:22:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1845186858, now seen corresponding path program 2 times [2024-06-28 03:22:55,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:22:55,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347928273] [2024-06-28 03:22:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:22:55,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:22:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:22:56,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:22:56,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:22:56,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347928273] [2024-06-28 03:22:56,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347928273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:22:56,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:22:56,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:22:56,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010364059] [2024-06-28 03:22:56,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:22:56,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:22:56,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:22:56,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:22:56,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:22:56,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:22:56,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 837 transitions, 12967 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:22:56,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:22:56,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:22:56,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:22:59,011 INFO L124 PetriNetUnfolderBase]: 6207/9571 cut-off events. [2024-06-28 03:22:59,011 INFO L125 PetriNetUnfolderBase]: For 1518315/1518355 co-relation queries the response was YES. [2024-06-28 03:22:59,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97810 conditions, 9571 events. 6207/9571 cut-off events. For 1518315/1518355 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 57798 event pairs, 1707 based on Foata normal form. 7/9542 useless extension candidates. Maximal degree in co-relation 97640. Up to 8606 conditions per place. [2024-06-28 03:22:59,179 INFO L140 encePairwiseOnDemand]: 35/44 looper letters, 665 selfloop transitions, 45 changer transitions 0/855 dead transitions. [2024-06-28 03:22:59,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 855 transitions, 14685 flow [2024-06-28 03:22:59,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:22:59,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:22:59,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 03:22:59,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:22:59,181 INFO L175 Difference]: Start difference. First operand has 384 places, 837 transitions, 12967 flow. Second operand 7 states and 133 transitions. [2024-06-28 03:22:59,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 855 transitions, 14685 flow [2024-06-28 03:23:01,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 855 transitions, 14026 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-28 03:23:01,754 INFO L231 Difference]: Finished difference. Result has 380 places, 840 transitions, 12454 flow [2024-06-28 03:23:01,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12312, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=795, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12454, PETRI_PLACES=380, PETRI_TRANSITIONS=840} [2024-06-28 03:23:01,754 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 335 predicate places. [2024-06-28 03:23:01,755 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 840 transitions, 12454 flow [2024-06-28 03:23:01,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:01,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:01,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:01,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:23:01,755 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:01,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:01,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1608384198, now seen corresponding path program 20 times [2024-06-28 03:23:01,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:01,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63554179] [2024-06-28 03:23:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:01,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:02,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:02,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63554179] [2024-06-28 03:23:02,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63554179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:02,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:02,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:02,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149713431] [2024-06-28 03:23:02,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:02,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:02,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:02,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:02,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:03,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:23:03,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 840 transitions, 12454 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:03,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:03,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:23:03,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:05,366 INFO L124 PetriNetUnfolderBase]: 5986/9261 cut-off events. [2024-06-28 03:23:05,366 INFO L125 PetriNetUnfolderBase]: For 1469483/1469483 co-relation queries the response was YES. [2024-06-28 03:23:05,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94949 conditions, 9261 events. 5986/9261 cut-off events. For 1469483/1469483 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 56340 event pairs, 1892 based on Foata normal form. 4/9262 useless extension candidates. Maximal degree in co-relation 94779. Up to 8662 conditions per place. [2024-06-28 03:23:05,524 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 812 selfloop transitions, 56 changer transitions 0/878 dead transitions. [2024-06-28 03:23:05,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 878 transitions, 14579 flow [2024-06-28 03:23:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:05,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:05,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 03:23:05,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-06-28 03:23:05,526 INFO L175 Difference]: Start difference. First operand has 380 places, 840 transitions, 12454 flow. Second operand 10 states and 186 transitions. [2024-06-28 03:23:05,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 878 transitions, 14579 flow [2024-06-28 03:23:08,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 878 transitions, 14488 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:23:08,114 INFO L231 Difference]: Finished difference. Result has 386 places, 845 transitions, 12622 flow [2024-06-28 03:23:08,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12363, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=840, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12622, PETRI_PLACES=386, PETRI_TRANSITIONS=845} [2024-06-28 03:23:08,115 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 341 predicate places. [2024-06-28 03:23:08,115 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 845 transitions, 12622 flow [2024-06-28 03:23:08,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:08,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:08,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:08,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:23:08,115 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:08,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:08,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1608240048, now seen corresponding path program 21 times [2024-06-28 03:23:08,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:08,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675438018] [2024-06-28 03:23:08,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:08,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:09,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:09,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675438018] [2024-06-28 03:23:09,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675438018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:09,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:09,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:09,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317124791] [2024-06-28 03:23:09,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:09,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:09,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:09,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:09,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:09,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:23:09,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 845 transitions, 12622 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:09,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:09,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:23:09,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:11,857 INFO L124 PetriNetUnfolderBase]: 6005/9290 cut-off events. [2024-06-28 03:23:11,857 INFO L125 PetriNetUnfolderBase]: For 1477861/1477861 co-relation queries the response was YES. [2024-06-28 03:23:11,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95590 conditions, 9290 events. 6005/9290 cut-off events. For 1477861/1477861 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 56597 event pairs, 1899 based on Foata normal form. 4/9291 useless extension candidates. Maximal degree in co-relation 95419. Up to 8644 conditions per place. [2024-06-28 03:23:12,026 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 804 selfloop transitions, 66 changer transitions 0/880 dead transitions. [2024-06-28 03:23:12,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 880 transitions, 14741 flow [2024-06-28 03:23:12,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 03:23:12,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:23:12,028 INFO L175 Difference]: Start difference. First operand has 386 places, 845 transitions, 12622 flow. Second operand 10 states and 187 transitions. [2024-06-28 03:23:12,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 880 transitions, 14741 flow [2024-06-28 03:23:14,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 880 transitions, 14531 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 03:23:14,947 INFO L231 Difference]: Finished difference. Result has 389 places, 847 transitions, 12669 flow [2024-06-28 03:23:14,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12412, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=845, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12669, PETRI_PLACES=389, PETRI_TRANSITIONS=847} [2024-06-28 03:23:14,947 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 344 predicate places. [2024-06-28 03:23:14,947 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 847 transitions, 12669 flow [2024-06-28 03:23:14,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:14,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:14,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:14,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:23:14,948 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:14,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:14,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1629163799, now seen corresponding path program 17 times [2024-06-28 03:23:14,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:14,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953970600] [2024-06-28 03:23:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:14,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:16,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:16,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953970600] [2024-06-28 03:23:16,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953970600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:16,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:16,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:16,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987991273] [2024-06-28 03:23:16,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:16,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:16,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:16,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:16,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:16,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:23:16,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 847 transitions, 12669 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:16,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:16,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:23:16,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:18,934 INFO L124 PetriNetUnfolderBase]: 6053/9358 cut-off events. [2024-06-28 03:23:18,934 INFO L125 PetriNetUnfolderBase]: For 1526519/1526519 co-relation queries the response was YES. [2024-06-28 03:23:19,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97404 conditions, 9358 events. 6053/9358 cut-off events. For 1526519/1526519 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 57026 event pairs, 1859 based on Foata normal form. 4/9357 useless extension candidates. Maximal degree in co-relation 97232. Up to 8256 conditions per place. [2024-06-28 03:23:19,087 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 754 selfloop transitions, 133 changer transitions 0/897 dead transitions. [2024-06-28 03:23:19,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 897 transitions, 15456 flow [2024-06-28 03:23:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:19,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 03:23:19,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-28 03:23:19,089 INFO L175 Difference]: Start difference. First operand has 389 places, 847 transitions, 12669 flow. Second operand 10 states and 197 transitions. [2024-06-28 03:23:19,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 897 transitions, 15456 flow [2024-06-28 03:23:22,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 897 transitions, 15201 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-28 03:23:22,302 INFO L231 Difference]: Finished difference. Result has 390 places, 853 transitions, 12970 flow [2024-06-28 03:23:22,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12414, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=717, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12970, PETRI_PLACES=390, PETRI_TRANSITIONS=853} [2024-06-28 03:23:22,303 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 345 predicate places. [2024-06-28 03:23:22,303 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 853 transitions, 12970 flow [2024-06-28 03:23:22,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:22,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:22,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:22,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:23:22,303 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:22,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:22,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2114669309, now seen corresponding path program 18 times [2024-06-28 03:23:22,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:22,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916187572] [2024-06-28 03:23:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:22,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:23,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:23,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916187572] [2024-06-28 03:23:23,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916187572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:23,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:23,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:23,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088700858] [2024-06-28 03:23:23,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:23,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:23,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:23,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:23,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:23,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:23:23,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 853 transitions, 12970 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:23,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:23,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:23:23,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:26,267 INFO L124 PetriNetUnfolderBase]: 6073/9388 cut-off events. [2024-06-28 03:23:26,267 INFO L125 PetriNetUnfolderBase]: For 1566065/1566065 co-relation queries the response was YES. [2024-06-28 03:23:26,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98593 conditions, 9388 events. 6073/9388 cut-off events. For 1566065/1566065 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 57231 event pairs, 1855 based on Foata normal form. 4/9387 useless extension candidates. Maximal degree in co-relation 98421. Up to 8483 conditions per place. [2024-06-28 03:23:26,460 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 768 selfloop transitions, 122 changer transitions 0/900 dead transitions. [2024-06-28 03:23:26,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 900 transitions, 15329 flow [2024-06-28 03:23:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:26,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 03:23:26,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43863636363636366 [2024-06-28 03:23:26,462 INFO L175 Difference]: Start difference. First operand has 390 places, 853 transitions, 12970 flow. Second operand 10 states and 193 transitions. [2024-06-28 03:23:26,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 900 transitions, 15329 flow [2024-06-28 03:23:29,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 900 transitions, 14953 flow, removed 118 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:29,648 INFO L231 Difference]: Finished difference. Result has 394 places, 856 transitions, 12998 flow [2024-06-28 03:23:29,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12646, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=853, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12998, PETRI_PLACES=394, PETRI_TRANSITIONS=856} [2024-06-28 03:23:29,649 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 349 predicate places. [2024-06-28 03:23:29,649 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 856 transitions, 12998 flow [2024-06-28 03:23:29,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:29,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:29,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:29,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:23:29,650 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:29,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:29,650 INFO L85 PathProgramCache]: Analyzing trace with hash -723576831, now seen corresponding path program 19 times [2024-06-28 03:23:29,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:29,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336969408] [2024-06-28 03:23:29,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:30,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:30,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336969408] [2024-06-28 03:23:30,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336969408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:30,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:30,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:30,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139478880] [2024-06-28 03:23:30,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:30,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:30,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:30,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:30,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:30,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:23:30,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 856 transitions, 12998 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:30,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:30,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:23:30,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:33,351 INFO L124 PetriNetUnfolderBase]: 6052/9360 cut-off events. [2024-06-28 03:23:33,352 INFO L125 PetriNetUnfolderBase]: For 1579774/1579778 co-relation queries the response was YES. [2024-06-28 03:23:33,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98180 conditions, 9360 events. 6052/9360 cut-off events. For 1579774/1579778 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 57130 event pairs, 1930 based on Foata normal form. 4/9356 useless extension candidates. Maximal degree in co-relation 98006. Up to 8439 conditions per place. [2024-06-28 03:23:33,526 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 780 selfloop transitions, 121 changer transitions 0/911 dead transitions. [2024-06-28 03:23:33,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 911 transitions, 15764 flow [2024-06-28 03:23:33,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:33,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 03:23:33,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44772727272727275 [2024-06-28 03:23:33,528 INFO L175 Difference]: Start difference. First operand has 394 places, 856 transitions, 12998 flow. Second operand 10 states and 197 transitions. [2024-06-28 03:23:33,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 911 transitions, 15764 flow [2024-06-28 03:23:36,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 911 transitions, 15446 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 03:23:36,780 INFO L231 Difference]: Finished difference. Result has 396 places, 859 transitions, 13036 flow [2024-06-28 03:23:36,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12680, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=856, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=735, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13036, PETRI_PLACES=396, PETRI_TRANSITIONS=859} [2024-06-28 03:23:36,797 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 351 predicate places. [2024-06-28 03:23:36,797 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 859 transitions, 13036 flow [2024-06-28 03:23:36,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:36,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:36,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:36,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:23:36,799 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:36,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:36,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2109312664, now seen corresponding path program 22 times [2024-06-28 03:23:36,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:36,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232180684] [2024-06-28 03:23:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:37,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:37,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232180684] [2024-06-28 03:23:37,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232180684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:37,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:37,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:37,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620651023] [2024-06-28 03:23:37,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:37,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:37,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:37,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:37,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:38,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:23:38,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 859 transitions, 13036 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:38,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:38,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:23:38,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:40,631 INFO L124 PetriNetUnfolderBase]: 6069/9387 cut-off events. [2024-06-28 03:23:40,632 INFO L125 PetriNetUnfolderBase]: For 1616795/1616799 co-relation queries the response was YES. [2024-06-28 03:23:40,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98798 conditions, 9387 events. 6069/9387 cut-off events. For 1616795/1616799 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 57374 event pairs, 1937 based on Foata normal form. 4/9383 useless extension candidates. Maximal degree in co-relation 98623. Up to 8785 conditions per place. [2024-06-28 03:23:40,818 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 832 selfloop transitions, 54 changer transitions 0/896 dead transitions. [2024-06-28 03:23:40,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 896 transitions, 15232 flow [2024-06-28 03:23:40,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:40,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 03:23:40,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 03:23:40,820 INFO L175 Difference]: Start difference. First operand has 396 places, 859 transitions, 13036 flow. Second operand 10 states and 187 transitions. [2024-06-28 03:23:40,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 896 transitions, 15232 flow [2024-06-28 03:23:44,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 896 transitions, 14839 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 03:23:44,347 INFO L231 Difference]: Finished difference. Result has 398 places, 861 transitions, 12882 flow [2024-06-28 03:23:44,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12643, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=805, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12882, PETRI_PLACES=398, PETRI_TRANSITIONS=861} [2024-06-28 03:23:44,349 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 353 predicate places. [2024-06-28 03:23:44,349 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 861 transitions, 12882 flow [2024-06-28 03:23:44,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:44,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:44,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:44,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:23:44,351 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:44,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1629159924, now seen corresponding path program 23 times [2024-06-28 03:23:44,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:44,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736275013] [2024-06-28 03:23:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:44,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:45,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:45,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:45,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736275013] [2024-06-28 03:23:45,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736275013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:45,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:45,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:45,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744832370] [2024-06-28 03:23:45,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:45,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:45,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:45,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:45,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:45,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:23:45,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 861 transitions, 12882 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:45,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:45,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:23:45,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:48,955 INFO L124 PetriNetUnfolderBase]: 6121/9468 cut-off events. [2024-06-28 03:23:48,955 INFO L125 PetriNetUnfolderBase]: For 1656879/1656879 co-relation queries the response was YES. [2024-06-28 03:23:49,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99578 conditions, 9468 events. 6121/9468 cut-off events. For 1656879/1656879 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 57839 event pairs, 1896 based on Foata normal form. 4/9469 useless extension candidates. Maximal degree in co-relation 99402. Up to 8716 conditions per place. [2024-06-28 03:23:49,092 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 816 selfloop transitions, 75 changer transitions 0/901 dead transitions. [2024-06-28 03:23:49,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 901 transitions, 15531 flow [2024-06-28 03:23:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:49,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 03:23:49,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:23:49,093 INFO L175 Difference]: Start difference. First operand has 398 places, 861 transitions, 12882 flow. Second operand 10 states and 190 transitions. [2024-06-28 03:23:49,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 901 transitions, 15531 flow [2024-06-28 03:23:51,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 901 transitions, 15310 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-28 03:23:51,755 INFO L231 Difference]: Finished difference. Result has 400 places, 865 transitions, 13070 flow [2024-06-28 03:23:51,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12661, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=861, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=788, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13070, PETRI_PLACES=400, PETRI_TRANSITIONS=865} [2024-06-28 03:23:51,755 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 355 predicate places. [2024-06-28 03:23:51,756 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 865 transitions, 13070 flow [2024-06-28 03:23:51,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:51,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:51,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:51,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:23:51,756 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:51,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:51,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1629307949, now seen corresponding path program 20 times [2024-06-28 03:23:51,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:51,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626661502] [2024-06-28 03:23:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:51,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:23:52,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:23:52,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:23:52,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626661502] [2024-06-28 03:23:52,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626661502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:23:52,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:23:52,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:23:52,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133775962] [2024-06-28 03:23:52,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:23:52,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:23:52,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:23:52,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:23:52,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:23:52,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:23:52,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 865 transitions, 13070 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:52,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:23:52,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:23:52,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:23:55,822 INFO L124 PetriNetUnfolderBase]: 6143/9501 cut-off events. [2024-06-28 03:23:55,822 INFO L125 PetriNetUnfolderBase]: For 1691698/1691698 co-relation queries the response was YES. [2024-06-28 03:23:55,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100311 conditions, 9501 events. 6143/9501 cut-off events. For 1691698/1691698 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 58117 event pairs, 1891 based on Foata normal form. 4/9502 useless extension candidates. Maximal degree in co-relation 100134. Up to 8525 conditions per place. [2024-06-28 03:23:56,111 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 777 selfloop transitions, 134 changer transitions 0/921 dead transitions. [2024-06-28 03:23:56,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 921 transitions, 16279 flow [2024-06-28 03:23:56,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:23:56,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:23:56,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-06-28 03:23:56,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45681818181818185 [2024-06-28 03:23:56,113 INFO L175 Difference]: Start difference. First operand has 400 places, 865 transitions, 13070 flow. Second operand 10 states and 201 transitions. [2024-06-28 03:23:56,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 921 transitions, 16279 flow [2024-06-28 03:23:59,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 921 transitions, 16026 flow, removed 86 selfloop flow, removed 6 redundant places. [2024-06-28 03:23:59,332 INFO L231 Difference]: Finished difference. Result has 405 places, 871 transitions, 13353 flow [2024-06-28 03:23:59,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12817, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=733, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13353, PETRI_PLACES=405, PETRI_TRANSITIONS=871} [2024-06-28 03:23:59,333 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 360 predicate places. [2024-06-28 03:23:59,333 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 871 transitions, 13353 flow [2024-06-28 03:23:59,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:23:59,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:23:59,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:23:59,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:23:59,334 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:23:59,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:23:59,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1807685988, now seen corresponding path program 24 times [2024-06-28 03:23:59,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:23:59,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737276539] [2024-06-28 03:23:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:23:59,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:23:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:00,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:00,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737276539] [2024-06-28 03:24:00,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737276539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:00,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:00,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:24:00,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436383394] [2024-06-28 03:24:00,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:00,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:24:00,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:00,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:24:00,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:24:00,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:24:00,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 871 transitions, 13353 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:00,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:00,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:24:00,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:03,587 INFO L124 PetriNetUnfolderBase]: 6135/9493 cut-off events. [2024-06-28 03:24:03,587 INFO L125 PetriNetUnfolderBase]: For 1703865/1703865 co-relation queries the response was YES. [2024-06-28 03:24:03,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100504 conditions, 9493 events. 6135/9493 cut-off events. For 1703865/1703865 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 58117 event pairs, 1899 based on Foata normal form. 4/9494 useless extension candidates. Maximal degree in co-relation 100324. Up to 8949 conditions per place. [2024-06-28 03:24:03,728 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 863 selfloop transitions, 29 changer transitions 0/902 dead transitions. [2024-06-28 03:24:03,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 902 transitions, 15361 flow [2024-06-28 03:24:03,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:24:03,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:24:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 03:24:03,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4159090909090909 [2024-06-28 03:24:03,729 INFO L175 Difference]: Start difference. First operand has 405 places, 871 transitions, 13353 flow. Second operand 10 states and 183 transitions. [2024-06-28 03:24:03,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 902 transitions, 15361 flow [2024-06-28 03:24:06,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 902 transitions, 15056 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:06,524 INFO L231 Difference]: Finished difference. Result has 409 places, 871 transitions, 13113 flow [2024-06-28 03:24:06,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13048, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=871, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=842, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13113, PETRI_PLACES=409, PETRI_TRANSITIONS=871} [2024-06-28 03:24:06,525 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 364 predicate places. [2024-06-28 03:24:06,525 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 871 transitions, 13113 flow [2024-06-28 03:24:06,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:06,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:06,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:06,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:24:06,526 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:06,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1634670329, now seen corresponding path program 21 times [2024-06-28 03:24:06,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:06,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522548509] [2024-06-28 03:24:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:06,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:07,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:07,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522548509] [2024-06-28 03:24:07,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522548509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:07,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:07,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:24:07,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672918296] [2024-06-28 03:24:07,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:07,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:24:07,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:07,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:24:07,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:24:07,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:24:07,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 871 transitions, 13113 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:07,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:07,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:24:07,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:10,798 INFO L124 PetriNetUnfolderBase]: 6154/9517 cut-off events. [2024-06-28 03:24:10,798 INFO L125 PetriNetUnfolderBase]: For 1748828/1748832 co-relation queries the response was YES. [2024-06-28 03:24:10,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101088 conditions, 9517 events. 6154/9517 cut-off events. For 1748828/1748832 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 58375 event pairs, 1933 based on Foata normal form. 4/9513 useless extension candidates. Maximal degree in co-relation 100907. Up to 8526 conditions per place. [2024-06-28 03:24:10,947 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 795 selfloop transitions, 128 changer transitions 0/933 dead transitions. [2024-06-28 03:24:10,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 933 transitions, 16472 flow [2024-06-28 03:24:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:24:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:24:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-28 03:24:10,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4590909090909091 [2024-06-28 03:24:10,948 INFO L175 Difference]: Start difference. First operand has 409 places, 871 transitions, 13113 flow. Second operand 10 states and 202 transitions. [2024-06-28 03:24:10,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 933 transitions, 16472 flow [2024-06-28 03:24:14,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 933 transitions, 16388 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:24:14,256 INFO L231 Difference]: Finished difference. Result has 410 places, 877 transitions, 13519 flow [2024-06-28 03:24:14,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13029, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=871, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13519, PETRI_PLACES=410, PETRI_TRANSITIONS=877} [2024-06-28 03:24:14,261 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 365 predicate places. [2024-06-28 03:24:14,261 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 877 transitions, 13519 flow [2024-06-28 03:24:14,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:14,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:14,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:14,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:24:14,262 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:14,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:14,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1634675909, now seen corresponding path program 22 times [2024-06-28 03:24:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:14,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193152338] [2024-06-28 03:24:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:14,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:15,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:15,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:15,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193152338] [2024-06-28 03:24:15,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193152338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:15,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:15,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:24:15,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248578646] [2024-06-28 03:24:15,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:15,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:24:15,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:15,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:24:15,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:24:15,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:24:15,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 877 transitions, 13519 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:15,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:15,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:24:15,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:18,664 INFO L124 PetriNetUnfolderBase]: 6180/9565 cut-off events. [2024-06-28 03:24:18,664 INFO L125 PetriNetUnfolderBase]: For 1780228/1780228 co-relation queries the response was YES. [2024-06-28 03:24:18,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102125 conditions, 9565 events. 6180/9565 cut-off events. For 1780228/1780228 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 58693 event pairs, 1864 based on Foata normal form. 4/9564 useless extension candidates. Maximal degree in co-relation 101943. Up to 8646 conditions per place. [2024-06-28 03:24:18,817 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 807 selfloop transitions, 114 changer transitions 0/931 dead transitions. [2024-06-28 03:24:18,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 931 transitions, 15961 flow [2024-06-28 03:24:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:24:18,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:24:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:24:18,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-28 03:24:18,818 INFO L175 Difference]: Start difference. First operand has 410 places, 877 transitions, 13519 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:24:18,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 931 transitions, 15961 flow [2024-06-28 03:24:21,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 931 transitions, 15643 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-06-28 03:24:21,976 INFO L231 Difference]: Finished difference. Result has 414 places, 877 transitions, 13439 flow [2024-06-28 03:24:21,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13201, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13439, PETRI_PLACES=414, PETRI_TRANSITIONS=877} [2024-06-28 03:24:21,977 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 369 predicate places. [2024-06-28 03:24:21,977 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 877 transitions, 13439 flow [2024-06-28 03:24:21,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:21,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:21,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:21,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:24:21,978 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:21,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:21,978 INFO L85 PathProgramCache]: Analyzing trace with hash 366655993, now seen corresponding path program 1 times [2024-06-28 03:24:21,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:21,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260184137] [2024-06-28 03:24:21,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:21,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:23,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:23,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260184137] [2024-06-28 03:24:23,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260184137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:23,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:23,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:24:23,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844119505] [2024-06-28 03:24:23,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:23,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:24:23,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:23,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:24:23,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:24:23,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 44 [2024-06-28 03:24:23,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 877 transitions, 13439 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:23,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:23,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 44 [2024-06-28 03:24:23,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:26,436 INFO L124 PetriNetUnfolderBase]: 6968/10535 cut-off events. [2024-06-28 03:24:26,436 INFO L125 PetriNetUnfolderBase]: For 1824061/1824061 co-relation queries the response was YES. [2024-06-28 03:24:26,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108465 conditions, 10535 events. 6968/10535 cut-off events. For 1824061/1824061 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 62190 event pairs, 2252 based on Foata normal form. 2/10535 useless extension candidates. Maximal degree in co-relation 108281. Up to 10148 conditions per place. [2024-06-28 03:24:26,599 INFO L140 encePairwiseOnDemand]: 32/44 looper letters, 875 selfloop transitions, 31 changer transitions 0/914 dead transitions. [2024-06-28 03:24:26,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 914 transitions, 15614 flow [2024-06-28 03:24:26,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:24:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:24:26,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 03:24:26,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-28 03:24:26,600 INFO L175 Difference]: Start difference. First operand has 414 places, 877 transitions, 13439 flow. Second operand 9 states and 160 transitions. [2024-06-28 03:24:26,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 914 transitions, 15614 flow [2024-06-28 03:24:30,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 914 transitions, 15301 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 03:24:30,134 INFO L231 Difference]: Finished difference. Result has 414 places, 885 transitions, 13355 flow [2024-06-28 03:24:30,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13136, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=877, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13355, PETRI_PLACES=414, PETRI_TRANSITIONS=885} [2024-06-28 03:24:30,134 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 369 predicate places. [2024-06-28 03:24:30,135 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 885 transitions, 13355 flow [2024-06-28 03:24:30,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:30,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:30,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:30,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:24:30,135 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:30,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:30,136 INFO L85 PathProgramCache]: Analyzing trace with hash 917363745, now seen corresponding path program 23 times [2024-06-28 03:24:30,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:30,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593969080] [2024-06-28 03:24:30,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:30,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:31,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:31,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593969080] [2024-06-28 03:24:31,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593969080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:31,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:31,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:24:31,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370419123] [2024-06-28 03:24:31,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:31,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:24:31,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:31,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:24:31,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:24:31,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:24:31,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 885 transitions, 13355 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:31,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:31,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:24:31,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:34,423 INFO L124 PetriNetUnfolderBase]: 6236/9644 cut-off events. [2024-06-28 03:24:34,423 INFO L125 PetriNetUnfolderBase]: For 1841649/1841649 co-relation queries the response was YES. [2024-06-28 03:24:34,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102592 conditions, 9644 events. 6236/9644 cut-off events. For 1841649/1841649 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 59226 event pairs, 1916 based on Foata normal form. 6/9647 useless extension candidates. Maximal degree in co-relation 102407. Up to 8980 conditions per place. [2024-06-28 03:24:34,570 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 871 selfloop transitions, 44 changer transitions 0/925 dead transitions. [2024-06-28 03:24:34,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 925 transitions, 15613 flow [2024-06-28 03:24:34,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:24:34,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:24:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 03:24:34,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42272727272727273 [2024-06-28 03:24:34,571 INFO L175 Difference]: Start difference. First operand has 414 places, 885 transitions, 13355 flow. Second operand 10 states and 186 transitions. [2024-06-28 03:24:34,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 925 transitions, 15613 flow [2024-06-28 03:24:38,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 925 transitions, 15494 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:24:38,102 INFO L231 Difference]: Finished difference. Result has 416 places, 888 transitions, 13456 flow [2024-06-28 03:24:38,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13236, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=885, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=841, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13456, PETRI_PLACES=416, PETRI_TRANSITIONS=888} [2024-06-28 03:24:38,103 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 371 predicate places. [2024-06-28 03:24:38,103 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 888 transitions, 13456 flow [2024-06-28 03:24:38,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:38,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:38,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:38,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:24:38,103 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:38,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:38,104 INFO L85 PathProgramCache]: Analyzing trace with hash 109671387, now seen corresponding path program 24 times [2024-06-28 03:24:38,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:38,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844130266] [2024-06-28 03:24:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:38,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:39,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:39,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844130266] [2024-06-28 03:24:39,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844130266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:39,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:39,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:24:39,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122633252] [2024-06-28 03:24:39,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:39,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:24:39,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:24:39,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:24:39,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:24:39,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 888 transitions, 13456 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:39,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:39,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:24:39,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:42,232 INFO L124 PetriNetUnfolderBase]: 6258/9676 cut-off events. [2024-06-28 03:24:42,232 INFO L125 PetriNetUnfolderBase]: For 1870756/1870756 co-relation queries the response was YES. [2024-06-28 03:24:42,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103493 conditions, 9676 events. 6258/9676 cut-off events. For 1870756/1870756 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 59454 event pairs, 1914 based on Foata normal form. 4/9677 useless extension candidates. Maximal degree in co-relation 103307. Up to 8772 conditions per place. [2024-06-28 03:24:42,391 INFO L140 encePairwiseOnDemand]: 31/44 looper letters, 833 selfloop transitions, 95 changer transitions 0/938 dead transitions. [2024-06-28 03:24:42,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 938 transitions, 16702 flow [2024-06-28 03:24:42,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:24:42,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:24:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 03:24:42,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44545454545454544 [2024-06-28 03:24:42,393 INFO L175 Difference]: Start difference. First operand has 416 places, 888 transitions, 13456 flow. Second operand 10 states and 196 transitions. [2024-06-28 03:24:42,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 938 transitions, 16702 flow [2024-06-28 03:24:46,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 938 transitions, 16516 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-28 03:24:46,106 INFO L231 Difference]: Finished difference. Result has 419 places, 894 transitions, 13768 flow [2024-06-28 03:24:46,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13270, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13768, PETRI_PLACES=419, PETRI_TRANSITIONS=894} [2024-06-28 03:24:46,106 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 374 predicate places. [2024-06-28 03:24:46,107 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 894 transitions, 13768 flow [2024-06-28 03:24:46,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:46,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:46,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:46,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:24:46,107 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:46,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:46,108 INFO L85 PathProgramCache]: Analyzing trace with hash 109676967, now seen corresponding path program 25 times [2024-06-28 03:24:46,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:46,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113409569] [2024-06-28 03:24:46,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:46,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:47,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:47,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:47,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113409569] [2024-06-28 03:24:47,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113409569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:47,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:47,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:24:47,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591746251] [2024-06-28 03:24:47,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:47,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:24:47,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:24:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:24:47,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:24:47,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 894 transitions, 13768 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:47,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:47,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:24:47,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:50,483 INFO L124 PetriNetUnfolderBase]: 6280/9708 cut-off events. [2024-06-28 03:24:50,483 INFO L125 PetriNetUnfolderBase]: For 1913297/1913297 co-relation queries the response was YES. [2024-06-28 03:24:50,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104597 conditions, 9708 events. 6280/9708 cut-off events. For 1913297/1913297 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 59691 event pairs, 1914 based on Foata normal form. 4/9709 useless extension candidates. Maximal degree in co-relation 104409. Up to 8944 conditions per place. [2024-06-28 03:24:50,643 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 852 selfloop transitions, 77 changer transitions 0/939 dead transitions. [2024-06-28 03:24:50,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 939 transitions, 16152 flow [2024-06-28 03:24:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:24:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:24:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 03:24:50,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 03:24:50,644 INFO L175 Difference]: Start difference. First operand has 419 places, 894 transitions, 13768 flow. Second operand 10 states and 190 transitions. [2024-06-28 03:24:50,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 939 transitions, 16152 flow [2024-06-28 03:24:54,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 939 transitions, 15603 flow, removed 89 selfloop flow, removed 9 redundant places. [2024-06-28 03:24:54,557 INFO L231 Difference]: Finished difference. Result has 420 places, 897 transitions, 13520 flow [2024-06-28 03:24:54,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13228, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=894, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=817, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13520, PETRI_PLACES=420, PETRI_TRANSITIONS=897} [2024-06-28 03:24:54,558 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 375 predicate places. [2024-06-28 03:24:54,558 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 897 transitions, 13520 flow [2024-06-28 03:24:54,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:54,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:24:54,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:24:54,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:24:54,559 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:24:54,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:24:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash 109878777, now seen corresponding path program 26 times [2024-06-28 03:24:54,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:24:54,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185434329] [2024-06-28 03:24:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:24:54,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:24:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:24:55,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:24:55,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:24:55,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185434329] [2024-06-28 03:24:55,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185434329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:24:55,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:24:55,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:24:55,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548389284] [2024-06-28 03:24:55,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:24:55,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:24:55,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:24:55,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:24:55,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:24:55,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2024-06-28 03:24:55,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 897 transitions, 13520 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:24:55,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:24:55,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2024-06-28 03:24:55,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:24:58,790 INFO L124 PetriNetUnfolderBase]: 6270/9694 cut-off events. [2024-06-28 03:24:58,790 INFO L125 PetriNetUnfolderBase]: For 1923575/1923575 co-relation queries the response was YES. [2024-06-28 03:24:58,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103428 conditions, 9694 events. 6270/9694 cut-off events. For 1923575/1923575 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 59661 event pairs, 1919 based on Foata normal form. 4/9695 useless extension candidates. Maximal degree in co-relation 103240. Up to 8930 conditions per place. [2024-06-28 03:24:58,943 INFO L140 encePairwiseOnDemand]: 30/44 looper letters, 862 selfloop transitions, 71 changer transitions 0/943 dead transitions. [2024-06-28 03:24:58,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 943 transitions, 15839 flow [2024-06-28 03:24:58,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:24:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:24:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 03:24:58,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340909090909091 [2024-06-28 03:24:58,945 INFO L175 Difference]: Start difference. First operand has 420 places, 897 transitions, 13520 flow. Second operand 10 states and 191 transitions. [2024-06-28 03:24:58,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 943 transitions, 15839 flow [2024-06-28 03:25:02,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 943 transitions, 15515 flow, removed 88 selfloop flow, removed 8 redundant places. [2024-06-28 03:25:02,487 INFO L231 Difference]: Finished difference. Result has 422 places, 897 transitions, 13348 flow [2024-06-28 03:25:02,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=13196, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=826, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13348, PETRI_PLACES=422, PETRI_TRANSITIONS=897} [2024-06-28 03:25:02,488 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 377 predicate places. [2024-06-28 03:25:02,488 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 897 transitions, 13348 flow [2024-06-28 03:25:02,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:25:02,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:25:02,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:25:02,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:25:02,489 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:25:02,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:25:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1265011990, now seen corresponding path program 3 times [2024-06-28 03:25:02,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:25:02,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332809726] [2024-06-28 03:25:02,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:25:02,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:25:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat