./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/mix000.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix000.oepc.i ./goblint.2024-05-07_14-17-48.files/mutex-meet/mix000.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 11:11:04,853 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 11:11:04,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 11:11:04,948 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 11:11:04,949 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 11:11:04,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 11:11:04,985 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 11:11:04,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 11:11:04,986 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 11:11:04,990 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 11:11:04,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 11:11:04,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 11:11:04,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 11:11:04,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 11:11:04,993 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 11:11:04,993 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 11:11:04,993 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 11:11:04,994 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 11:11:04,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 11:11:04,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 11:11:04,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 11:11:04,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 11:11:04,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 11:11:04,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 11:11:04,996 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 11:11:04,996 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 11:11:04,996 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 11:11:04,996 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 11:11:04,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 11:11:04,997 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 11:11:04,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 11:11:04,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 11:11:05,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:11:05,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 11:11:05,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 11:11:05,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 11:11:05,006 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 11:11:05,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 11:11:05,006 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 11:11:05,006 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 11:11:05,006 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 11:11:05,007 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 11:11:05,007 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 11:11:05,007 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 11:11:05,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 11:11:05,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 11:11:05,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 11:11:05,267 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 11:11:05,267 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 11:11:05,268 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/mix000.oepc.yml/witness.yml [2024-05-12 11:11:05,442 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 11:11:05,442 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 11:11:05,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-05-12 11:11:06,654 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 11:11:06,948 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 11:11:06,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-05-12 11:11:06,961 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d453f98e8/7daa4a13991a48b1a52b76fbe0207848/FLAGe8ea1e95a [2024-05-12 11:11:06,972 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d453f98e8/7daa4a13991a48b1a52b76fbe0207848 [2024-05-12 11:11:06,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 11:11:06,973 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 11:11:06,974 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 11:11:06,974 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 11:11:06,979 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 11:11:06,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:11:05" (1/2) ... [2024-05-12 11:11:06,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7113e4ae and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:11:06, skipping insertion in model container [2024-05-12 11:11:06,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:11:05" (1/2) ... [2024-05-12 11:11:06,982 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e1ded3b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 11:11:06, skipping insertion in model container [2024-05-12 11:11:06,982 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:11:06" (2/2) ... [2024-05-12 11:11:06,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7113e4ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:06, skipping insertion in model container [2024-05-12 11:11:06,983 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 11:11:06" (2/2) ... [2024-05-12 11:11:06,983 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 11:11:07,059 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 11:11:07,060 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] (((((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd2 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$w_buff0) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p0_EBX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd2 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd2 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )x) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )x) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$w_buff0) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd2 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd2 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL))) && (! multithreaded || ((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p0_EBX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p0_EAX <= 1) && __unbuffered_p0_EBX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p1_EBX <= 1) && x <= 1) && y <= 1) && y$mem_tmp <= 1) && y$w_buff0 <= 1) && y$w_buff1 <= 1) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-05-12 11:11:07,063 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] (((((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff0_thd2 >= 0LL && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$r_buff1_thd2) + (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff0 >= 0LL) && (0LL - (long long )y$read_delayed) + (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$w_buff0) + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p0_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_cnt + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_cnt + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_cnt + (long long )x >= 0LL) && (long long )__unbuffered_cnt + (long long )y >= 0LL) && (long long )__unbuffered_cnt + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_cnt + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_cnt + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p0_EBX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )__unbuffered_p1_EAX >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p0_EBX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )__unbuffered_p1_EBX >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EAX + (long long )weak$$choice2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )main$tmp_guard1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )x >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$flush_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$mem_tmp >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice0 >= 0LL) && (long long )__unbuffered_p1_EBX + (long long )weak$$choice2 >= 0LL) && (long long )main$tmp_guard1 + (long long )x >= 0LL) && (long long )main$tmp_guard1 + (long long )y >= 0LL) && (long long )main$tmp_guard1 + (long long )y$flush_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$mem_tmp >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff0 >= 0LL) && (long long )main$tmp_guard1 + (long long )y$w_buff1 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice0 >= 0LL) && (long long )main$tmp_guard1 + (long long )weak$$choice2 >= 0LL) && (long long )x + (long long )y >= 0LL) && (long long )x + (long long )y$flush_delayed >= 0LL) && (long long )x + (long long )y$mem_tmp >= 0LL) && (long long )x + (long long )y$r_buff0_thd0 >= 0LL) && (long long )x + (long long )y$r_buff0_thd2 >= 0LL) && (long long )x + (long long )y$r_buff1_thd0 >= 0LL) && (long long )x + (long long )y$r_buff1_thd2 >= 0LL) && (long long )x + (long long )y$read_delayed >= 0LL) && (long long )x + (long long )y$w_buff0 >= 0LL) && (long long )x + (long long )y$w_buff1 >= 0LL) && (long long )y + (long long )y$flush_delayed >= 0LL) && (long long )y + (long long )y$mem_tmp >= 0LL) && (long long )y + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y + (long long )y$read_delayed >= 0LL) && (long long )y + (long long )y$w_buff0 >= 0LL) && (long long )y + (long long )y$w_buff1 >= 0LL) && (long long )y$flush_delayed + (long long )y$mem_tmp >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed + (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$flush_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp + (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff0 >= 0LL) && (long long )y$mem_tmp + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff0_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd0 + (long long )y$w_buff1 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff0 >= 0LL) && (long long )y$r_buff1_thd2 + (long long )y$w_buff1 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff0 >= 0LL) && (long long )y$read_delayed + (long long )y$w_buff1 >= 0LL) && (long long )y$w_buff0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )x >= 0LL) && (long long )weak$$choice0 + (long long )y >= 0LL) && (long long )weak$$choice0 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice0 + (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 + (long long )weak$$choice2 >= 0LL) && (long long )weak$$choice2 + (long long )x >= 0LL) && (long long )weak$$choice2 + (long long )y >= 0LL) && (long long )weak$$choice2 + (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$mem_tmp >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 + (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 + (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff0 >= 0LL) && (long long )weak$$choice2 + (long long )y$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_cnt) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_p0_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_p0_EBX) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_p1_EAX) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )__unbuffered_p1_EBX) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )main$tmp_guard1) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )x) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )x) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$flush_delayed) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$mem_tmp) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$mem_tmp) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )weak$$choice0) - (long long )y$w_buff1 >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$w_buff0 >= 0LL) && (1LL + (long long )weak$$choice2) - (long long )y$w_buff1 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff0_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd0 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff0_thd2) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$r_buff1_thd2 >= 0LL) && (0LL - (long long )y$r_buff1_thd0) - (long long )y$read_delayed >= 0LL) && (0LL - (long long )y$r_buff1_thd2) - (long long )y$read_delayed >= 0LL) && (1LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd0) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff0_thd2) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd0) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$r_buff1_thd2) - (long long )y$w_buff1 >= 0LL) && (1LL - (long long )y$read_delayed) - (long long )y$w_buff0 >= 0LL) && (1LL - (long long )y$read_delayed) - (long long )y$w_buff1 >= 0LL) && (2LL - (long long )y$w_buff0) - (long long )y$w_buff1 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_cnt - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p0_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p0_EBX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EAX - (long long )y$read_delayed >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff0_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd0 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$r_buff1_thd2 >= 0LL) && (long long )__unbuffered_p1_EBX - (long long )y$read_delayed >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )main$tmp_guard1 - (long long )y$read_delayed >= 0LL) && (long long )x - (long long )y$r_buff0_thd0 >= 0LL) && (long long )x - (long long )y$r_buff0_thd2 >= 0LL) && (long long )x - (long long )y$r_buff1_thd0 >= 0LL) && (long long )x - (long long )y$r_buff1_thd2 >= 0LL) && (long long )x - (long long )y$read_delayed >= 0LL) && (long long )y - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y - (long long )y$read_delayed >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$flush_delayed - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$flush_delayed - (long long )y$read_delayed >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$mem_tmp - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$mem_tmp - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff0_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )y$r_buff1_thd0 - (long long )y$read_delayed >= 0LL) && (long long )y$r_buff1_thd2 - (long long )y$read_delayed >= 0LL) && (long long )y$w_buff0 - (long long )y$w_buff1 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice0 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice0 - (long long )y$read_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$flush_delayed >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff0_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd0 >= 0LL) && (long long )weak$$choice2 - (long long )y$r_buff1_thd2 >= 0LL) && (long long )weak$$choice2 - (long long )y$read_delayed >= 0LL))) && (! multithreaded || ((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && 0 <= __unbuffered_p0_EAX) && 0 <= __unbuffered_p0_EBX) && 0 <= __unbuffered_p1_EAX) && 0 <= __unbuffered_p1_EBX) && 0 <= x) && 0 <= y) && 0 <= y$mem_tmp) && 0 <= y$w_buff0) && 0 <= y$w_buff1) && __unbuffered_p0_EAX <= 1) && __unbuffered_p0_EBX <= 1) && __unbuffered_p1_EAX <= 1) && __unbuffered_p1_EBX <= 1) && x <= 1) && y <= 1) && y$mem_tmp <= 1) && y$w_buff0 <= 1) && y$w_buff1 <= 1) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-05-12 11:11:07,064 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 11:11:07,064 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-05-12 11:11:07,118 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 11:11:07,304 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i[988,1001] [2024-05-12 11:11:07,534 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:11:07,544 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 11:11:07,580 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i[988,1001] Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 11:11:07,790 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 11:11:07,833 INFO L206 MainTranslator]: Completed translation [2024-05-12 11:11:07,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07 WrapperNode [2024-05-12 11:11:07,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 11:11:07,835 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 11:11:07,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 11:11:07,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 11:11:07,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:07,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:07,960 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2024-05-12 11:11:07,960 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 11:11:07,962 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 11:11:07,962 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 11:11:07,962 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 11:11:07,973 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:07,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:08,039 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:08,080 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-05-12 11:11:08,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:08,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:08,148 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:08,150 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:08,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:08,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:08,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 11:11:08,178 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 11:11:08,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 11:11:08,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 11:11:08,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (1/1) ... [2024-05-12 11:11:08,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 11:11:08,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 11:11:08,209 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) [2024-05-12 11:11:08,232 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 [2024-05-12 11:11:08,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 11:11:08,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 11:11:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 11:11:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 11:11:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 11:11:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 11:11:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 11:11:08,255 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 11:11:08,256 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 11:11:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 11:11:08,256 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 11:11:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 11:11:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 11:11:08,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 11:11:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 11:11:08,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 11:11:08,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 11:11:08,258 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 11:11:08,398 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 11:11:08,400 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 11:11:09,251 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 11:11:09,251 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 11:11:09,465 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 11:11:09,465 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 11:11:09,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:11:09 BoogieIcfgContainer [2024-05-12 11:11:09,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 11:11:09,474 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 11:11:09,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 11:11:09,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 11:11:09,477 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 11:11:05" (1/4) ... [2024-05-12 11:11:09,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89a8592 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 11:11:09, skipping insertion in model container [2024-05-12 11:11:09,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 11:11:06" (2/4) ... [2024-05-12 11:11:09,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89a8592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 11:11:09, skipping insertion in model container [2024-05-12 11:11:09,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 11:11:07" (3/4) ... [2024-05-12 11:11:09,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89a8592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 11:11:09, skipping insertion in model container [2024-05-12 11:11:09,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 11:11:09" (4/4) ... [2024-05-12 11:11:09,480 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.oepc.i [2024-05-12 11:11:09,495 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 11:11:09,496 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-05-12 11:11:09,496 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 11:11:09,576 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 11:11:09,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-05-12 11:11:09,652 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-05-12 11:11:09,653 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 11:11:09,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 54 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-05-12 11:11:09,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-05-12 11:11:09,660 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-05-12 11:11:09,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 11:11:09,684 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;@664d6aa3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 11:11:09,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-05-12 11:11:09,693 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 11:11:09,693 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 11:11:09,693 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 11:11:09,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:11:09,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 11:11:09,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:11:09,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:11:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1965846389, now seen corresponding path program 1 times [2024-05-12 11:11:09,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:11:09,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228536290] [2024-05-12 11:11:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:11:09,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:11:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:11:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:11:14,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:11:14,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228536290] [2024-05-12 11:11:14,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228536290] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:11:14,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:11:14,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 11:11:14,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728503682] [2024-05-12 11:11:14,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:11:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:11:14,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:11:14,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:11:14,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 11:11:14,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 11:11:14,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:14,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:11:14,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 11:11:14,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:11:14,930 INFO L124 PetriNetUnfolderBase]: 475/845 cut-off events. [2024-05-12 11:11:14,930 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-05-12 11:11:14,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1663 conditions, 845 events. 475/845 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4340 event pairs, 182 based on Foata normal form. 43/828 useless extension candidates. Maximal degree in co-relation 1649. Up to 787 conditions per place. [2024-05-12 11:11:14,938 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 32 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-05-12 11:11:14,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 173 flow [2024-05-12 11:11:14,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:11:14,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:11:14,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-05-12 11:11:14,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-05-12 11:11:14,950 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 76 transitions. [2024-05-12 11:11:14,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 173 flow [2024-05-12 11:11:14,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 11:11:14,955 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-05-12 11:11:14,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, 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=102, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-05-12 11:11:14,960 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-05-12 11:11:14,960 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-05-12 11:11:14,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:14,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:11:14,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 11:11:14,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 11:11:14,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:11:14,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:11:14,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1965845573, now seen corresponding path program 1 times [2024-05-12 11:11:14,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:11:14,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917567381] [2024-05-12 11:11:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:11:14,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:11:14,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:11:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:11:15,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:11:15,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917567381] [2024-05-12 11:11:15,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917567381] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:11:15,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:11:15,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 11:11:15,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856825833] [2024-05-12 11:11:15,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:11:15,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 11:11:15,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:11:15,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 11:11:15,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 11:11:15,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-05-12 11:11:15,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:15,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:11:15,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-05-12 11:11:15,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:11:15,213 INFO L124 PetriNetUnfolderBase]: 219/527 cut-off events. [2024-05-12 11:11:15,214 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-05-12 11:11:15,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 527 events. 219/527 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2986 event pairs, 130 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 969. Up to 340 conditions per place. [2024-05-12 11:11:15,218 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 26 selfloop transitions, 3 changer transitions 2/47 dead transitions. [2024-05-12 11:11:15,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 179 flow [2024-05-12 11:11:15,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 11:11:15,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 11:11:15,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-05-12 11:11:15,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-05-12 11:11:15,222 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 3 states and 82 transitions. [2024-05-12 11:11:15,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 179 flow [2024-05-12 11:11:15,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 11:11:15,225 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 94 flow [2024-05-12 11:11:15,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-05-12 11:11:15,229 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-05-12 11:11:15,229 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 94 flow [2024-05-12 11:11:15,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:15,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:11:15,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:11:15,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 11:11:15,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:11:15,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:11:15,235 INFO L85 PathProgramCache]: Analyzing trace with hash 607250057, now seen corresponding path program 1 times [2024-05-12 11:11:15,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:11:15,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382946991] [2024-05-12 11:11:15,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:11:15,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:11:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:11:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:11:18,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:11:18,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382946991] [2024-05-12 11:11:18,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382946991] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:11:18,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:11:18,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 11:11:18,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567597392] [2024-05-12 11:11:18,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:11:18,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 11:11:18,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:11:18,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 11:11:18,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 11:11:18,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 11:11:18,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:18,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:11:18,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 11:11:18,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:11:19,238 INFO L124 PetriNetUnfolderBase]: 342/724 cut-off events. [2024-05-12 11:11:19,238 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2024-05-12 11:11:19,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1477 conditions, 724 events. 342/724 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3855 event pairs, 160 based on Foata normal form. 2/691 useless extension candidates. Maximal degree in co-relation 1461. Up to 562 conditions per place. [2024-05-12 11:11:19,244 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 36 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2024-05-12 11:11:19,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 224 flow [2024-05-12 11:11:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 11:11:19,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 11:11:19,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-05-12 11:11:19,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921052631578947 [2024-05-12 11:11:19,248 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 94 flow. Second operand 4 states and 90 transitions. [2024-05-12 11:11:19,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 224 flow [2024-05-12 11:11:19,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 11:11:19,251 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 137 flow [2024-05-12 11:11:19,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-05-12 11:11:19,252 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-05-12 11:11:19,252 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 137 flow [2024-05-12 11:11:19,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:19,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:11:19,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:11:19,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 11:11:19,254 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:11:19,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:11:19,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1644883288, now seen corresponding path program 1 times [2024-05-12 11:11:19,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:11:19,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246851395] [2024-05-12 11:11:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:11:19,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:11:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:11:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:11:23,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:11:23,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246851395] [2024-05-12 11:11:23,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246851395] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:11:23,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:11:23,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 11:11:23,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408444144] [2024-05-12 11:11:23,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:11:23,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 11:11:23,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:11:23,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 11:11:23,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 11:11:23,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 11:11:23,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:23,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:11:23,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 11:11:23,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:11:24,211 INFO L124 PetriNetUnfolderBase]: 342/725 cut-off events. [2024-05-12 11:11:24,211 INFO L125 PetriNetUnfolderBase]: For 294/294 co-relation queries the response was YES. [2024-05-12 11:11:24,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 725 events. 342/725 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3858 event pairs, 142 based on Foata normal form. 4/701 useless extension candidates. Maximal degree in co-relation 1601. Up to 532 conditions per place. [2024-05-12 11:11:24,216 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 44 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2024-05-12 11:11:24,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 299 flow [2024-05-12 11:11:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 11:11:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 11:11:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-05-12 11:11:24,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5894736842105263 [2024-05-12 11:11:24,220 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 137 flow. Second operand 5 states and 112 transitions. [2024-05-12 11:11:24,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 299 flow [2024-05-12 11:11:24,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 292 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 11:11:24,224 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 165 flow [2024-05-12 11:11:24,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-05-12 11:11:24,226 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-05-12 11:11:24,226 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 165 flow [2024-05-12 11:11:24,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:24,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:11:24,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:11:24,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 11:11:24,227 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:11:24,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:11:24,228 INFO L85 PathProgramCache]: Analyzing trace with hash -31093897, now seen corresponding path program 1 times [2024-05-12 11:11:24,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:11:24,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878543349] [2024-05-12 11:11:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:11:24,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:11:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:11:30,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:11:30,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:11:30,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878543349] [2024-05-12 11:11:30,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878543349] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:11:30,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:11:30,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 11:11:30,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192014662] [2024-05-12 11:11:30,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:11:30,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 11:11:30,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:11:30,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 11:11:30,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 11:11:30,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:11:30,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:30,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:11:30,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:11:30,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:11:30,945 INFO L124 PetriNetUnfolderBase]: 559/1101 cut-off events. [2024-05-12 11:11:30,945 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-05-12 11:11:30,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 1101 events. 559/1101 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5937 event pairs, 254 based on Foata normal form. 1/1060 useless extension candidates. Maximal degree in co-relation 2585. Up to 908 conditions per place. [2024-05-12 11:11:30,954 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 41 selfloop transitions, 8 changer transitions 0/56 dead transitions. [2024-05-12 11:11:30,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 56 transitions, 297 flow [2024-05-12 11:11:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 11:11:30,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 11:11:30,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-05-12 11:11:30,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-05-12 11:11:30,960 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 165 flow. Second operand 5 states and 89 transitions. [2024-05-12 11:11:30,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 56 transitions, 297 flow [2024-05-12 11:11:30,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 56 transitions, 280 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-05-12 11:11:30,966 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 180 flow [2024-05-12 11:11:30,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2024-05-12 11:11:30,969 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2024-05-12 11:11:30,969 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 180 flow [2024-05-12 11:11:30,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:30,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:11:30,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:11:30,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 11:11:30,970 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:11:30,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:11:30,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2094946157, now seen corresponding path program 1 times [2024-05-12 11:11:30,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:11:30,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418152883] [2024-05-12 11:11:30,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:11:30,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:11:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:11:35,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:11:35,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:11:35,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418152883] [2024-05-12 11:11:35,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418152883] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:11:35,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:11:35,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 11:11:35,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252331297] [2024-05-12 11:11:35,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:11:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 11:11:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:11:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 11:11:35,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-05-12 11:11:35,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-05-12 11:11:35,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 180 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) [2024-05-12 11:11:35,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:11:35,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-05-12 11:11:35,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:11:36,502 INFO L124 PetriNetUnfolderBase]: 449/908 cut-off events. [2024-05-12 11:11:36,502 INFO L125 PetriNetUnfolderBase]: For 814/814 co-relation queries the response was YES. [2024-05-12 11:11:36,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2220 conditions, 908 events. 449/908 cut-off events. For 814/814 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4917 event pairs, 136 based on Foata normal form. 4/878 useless extension candidates. Maximal degree in co-relation 2198. Up to 652 conditions per place. [2024-05-12 11:11:36,508 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 57 selfloop transitions, 11 changer transitions 0/78 dead transitions. [2024-05-12 11:11:36,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 402 flow [2024-05-12 11:11:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 11:11:36,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 11:11:36,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-05-12 11:11:36,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413533834586466 [2024-05-12 11:11:36,510 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 180 flow. Second operand 7 states and 144 transitions. [2024-05-12 11:11:36,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 402 flow [2024-05-12 11:11:36,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 388 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-05-12 11:11:36,515 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 205 flow [2024-05-12 11:11:36,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=205, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2024-05-12 11:11:36,518 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-05-12 11:11:36,518 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 205 flow [2024-05-12 11:11:36,519 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) [2024-05-12 11:11:36,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:11:36,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:11:36,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 11:11:36,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:11:36,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:11:36,520 INFO L85 PathProgramCache]: Analyzing trace with hash -963909705, now seen corresponding path program 1 times [2024-05-12 11:11:36,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:11:36,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660546649] [2024-05-12 11:11:36,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:11:36,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:11:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:11:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:11:41,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:11:41,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660546649] [2024-05-12 11:11:41,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660546649] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:11:41,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:11:41,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 11:11:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834364600] [2024-05-12 11:11:41,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:11:41,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 11:11:41,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:11:41,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 11:11:41,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 11:11:41,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:11:41,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 205 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:41,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:11:41,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:11:41,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:11:42,352 INFO L124 PetriNetUnfolderBase]: 553/1065 cut-off events. [2024-05-12 11:11:42,353 INFO L125 PetriNetUnfolderBase]: For 1201/1201 co-relation queries the response was YES. [2024-05-12 11:11:42,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2784 conditions, 1065 events. 553/1065 cut-off events. For 1201/1201 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5658 event pairs, 201 based on Foata normal form. 3/1032 useless extension candidates. Maximal degree in co-relation 2761. Up to 866 conditions per place. [2024-05-12 11:11:42,360 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 50 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-05-12 11:11:42,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 67 transitions, 377 flow [2024-05-12 11:11:42,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 11:11:42,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 11:11:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-05-12 11:11:42,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-05-12 11:11:42,362 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 205 flow. Second operand 6 states and 106 transitions. [2024-05-12 11:11:42,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 67 transitions, 377 flow [2024-05-12 11:11:42,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 353 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-05-12 11:11:42,366 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 218 flow [2024-05-12 11:11:42,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=218, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-05-12 11:11:42,367 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2024-05-12 11:11:42,368 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 218 flow [2024-05-12 11:11:42,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:42,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:11:42,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:11:42,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 11:11:42,369 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:11:42,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:11:42,369 INFO L85 PathProgramCache]: Analyzing trace with hash -467848567, now seen corresponding path program 1 times [2024-05-12 11:11:42,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:11:42,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879234554] [2024-05-12 11:11:42,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:11:42,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:11:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:11:46,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:11:46,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:11:46,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879234554] [2024-05-12 11:11:46,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879234554] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:11:46,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:11:46,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 11:11:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236487692] [2024-05-12 11:11:46,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:11:46,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 11:11:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:11:46,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 11:11:46,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 11:11:46,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 11:11:46,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-05-12 11:11:46,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:11:46,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 11:11:46,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:11:46,715 INFO L124 PetriNetUnfolderBase]: 481/933 cut-off events. [2024-05-12 11:11:46,716 INFO L125 PetriNetUnfolderBase]: For 1280/1280 co-relation queries the response was YES. [2024-05-12 11:11:46,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2556 conditions, 933 events. 481/933 cut-off events. For 1280/1280 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4957 event pairs, 157 based on Foata normal form. 1/897 useless extension candidates. Maximal degree in co-relation 2531. Up to 764 conditions per place. [2024-05-12 11:11:46,721 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 52 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-05-12 11:11:46,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 433 flow [2024-05-12 11:11:46,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 11:11:46,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 11:11:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 101 transitions. [2024-05-12 11:11:46,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531578947368421 [2024-05-12 11:11:46,723 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 218 flow. Second operand 5 states and 101 transitions. [2024-05-12 11:11:46,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 433 flow [2024-05-12 11:11:46,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 72 transitions, 409 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-05-12 11:11:46,727 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 272 flow [2024-05-12 11:11:46,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=272, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2024-05-12 11:11:46,729 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2024-05-12 11:11:46,729 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 272 flow [2024-05-12 11:11:46,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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) [2024-05-12 11:11:46,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:11:46,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:11:46,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 11:11:46,730 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:11:46,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:11:46,730 INFO L85 PathProgramCache]: Analyzing trace with hash 222885581, now seen corresponding path program 2 times [2024-05-12 11:11:46,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:11:46,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921072102] [2024-05-12 11:11:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:11:46,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:11:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:11:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:11:51,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:11:51,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921072102] [2024-05-12 11:11:51,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921072102] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:11:51,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:11:51,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 11:11:51,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85181796] [2024-05-12 11:11:51,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:11:51,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 11:11:51,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:11:51,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 11:11:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 11:11:51,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:11:51,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 272 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:51,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:11:51,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:11:51,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:11:51,782 INFO L124 PetriNetUnfolderBase]: 565/1091 cut-off events. [2024-05-12 11:11:51,783 INFO L125 PetriNetUnfolderBase]: For 1706/1706 co-relation queries the response was YES. [2024-05-12 11:11:51,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3086 conditions, 1091 events. 565/1091 cut-off events. For 1706/1706 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5837 event pairs, 211 based on Foata normal form. 1/1055 useless extension candidates. Maximal degree in co-relation 3060. Up to 915 conditions per place. [2024-05-12 11:11:51,791 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 52 selfloop transitions, 10 changer transitions 0/69 dead transitions. [2024-05-12 11:11:51,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 430 flow [2024-05-12 11:11:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 11:11:51,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 11:11:51,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-05-12 11:11:51,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 11:11:51,793 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 272 flow. Second operand 6 states and 102 transitions. [2024-05-12 11:11:51,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 430 flow [2024-05-12 11:11:51,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 424 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-05-12 11:11:51,798 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 291 flow [2024-05-12 11:11:51,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=291, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-05-12 11:11:51,799 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2024-05-12 11:11:51,799 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 291 flow [2024-05-12 11:11:51,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:51,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:11:51,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:11:51,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 11:11:51,800 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:11:51,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:11:51,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1618552534, now seen corresponding path program 1 times [2024-05-12 11:11:51,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:11:51,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257975521] [2024-05-12 11:11:51,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:11:51,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:11:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:11:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:11:57,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:11:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257975521] [2024-05-12 11:11:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257975521] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:11:57,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:11:57,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 11:11:57,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56096300] [2024-05-12 11:11:57,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:11:57,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 11:11:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:11:57,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 11:11:57,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 11:11:57,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:11:57,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 291 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:57,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:11:57,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:11:57,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:11:58,037 INFO L124 PetriNetUnfolderBase]: 579/1090 cut-off events. [2024-05-12 11:11:58,037 INFO L125 PetriNetUnfolderBase]: For 2091/2091 co-relation queries the response was YES. [2024-05-12 11:11:58,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3201 conditions, 1090 events. 579/1090 cut-off events. For 2091/2091 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5740 event pairs, 169 based on Foata normal form. 1/1053 useless extension candidates. Maximal degree in co-relation 3171. Up to 865 conditions per place. [2024-05-12 11:11:58,045 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 62 selfloop transitions, 18 changer transitions 0/87 dead transitions. [2024-05-12 11:11:58,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 87 transitions, 561 flow [2024-05-12 11:11:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 11:11:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 11:11:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-05-12 11:11:58,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-05-12 11:11:58,047 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 291 flow. Second operand 7 states and 129 transitions. [2024-05-12 11:11:58,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 87 transitions, 561 flow [2024-05-12 11:11:58,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 87 transitions, 532 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 11:11:58,056 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 327 flow [2024-05-12 11:11:58,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2024-05-12 11:11:58,058 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-05-12 11:11:58,058 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 327 flow [2024-05-12 11:11:58,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:11:58,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:11:58,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:11:58,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 11:11:58,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:11:58,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:11:58,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1411680342, now seen corresponding path program 2 times [2024-05-12 11:11:58,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:11:58,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24559367] [2024-05-12 11:11:58,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:11:58,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:11:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:12:03,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:12:03,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:12:03,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24559367] [2024-05-12 11:12:03,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24559367] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:12:03,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:12:03,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 11:12:03,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852480370] [2024-05-12 11:12:03,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:12:03,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 11:12:03,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:12:03,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 11:12:03,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 11:12:03,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:12:03,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 327 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:03,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:12:03,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:12:03,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:12:04,093 INFO L124 PetriNetUnfolderBase]: 590/1106 cut-off events. [2024-05-12 11:12:04,093 INFO L125 PetriNetUnfolderBase]: For 2511/2511 co-relation queries the response was YES. [2024-05-12 11:12:04,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3434 conditions, 1106 events. 590/1106 cut-off events. For 2511/2511 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5804 event pairs, 170 based on Foata normal form. 1/1069 useless extension candidates. Maximal degree in co-relation 3404. Up to 917 conditions per place. [2024-05-12 11:12:04,101 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 63 selfloop transitions, 15 changer transitions 0/85 dead transitions. [2024-05-12 11:12:04,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 85 transitions, 561 flow [2024-05-12 11:12:04,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 11:12:04,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 11:12:04,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-05-12 11:12:04,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46616541353383456 [2024-05-12 11:12:04,103 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 327 flow. Second operand 7 states and 124 transitions. [2024-05-12 11:12:04,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 85 transitions, 561 flow [2024-05-12 11:12:04,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 85 transitions, 534 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-05-12 11:12:04,108 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 353 flow [2024-05-12 11:12:04,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=353, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2024-05-12 11:12:04,109 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places. [2024-05-12 11:12:04,109 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 353 flow [2024-05-12 11:12:04,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:04,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:12:04,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:12:04,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 11:12:04,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:12:04,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:12:04,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1411680125, now seen corresponding path program 1 times [2024-05-12 11:12:04,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:12:04,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431278926] [2024-05-12 11:12:04,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:12:04,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:12:04,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:12:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:12:08,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:12:08,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431278926] [2024-05-12 11:12:08,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431278926] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:12:08,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:12:08,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 11:12:08,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2448979] [2024-05-12 11:12:08,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:12:08,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 11:12:08,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:12:08,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 11:12:08,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 11:12:08,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:12:08,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 353 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:08,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:12:08,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:12:08,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:12:09,420 INFO L124 PetriNetUnfolderBase]: 652/1218 cut-off events. [2024-05-12 11:12:09,420 INFO L125 PetriNetUnfolderBase]: For 3116/3116 co-relation queries the response was YES. [2024-05-12 11:12:09,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 1218 events. 652/1218 cut-off events. For 3116/3116 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6525 event pairs, 185 based on Foata normal form. 3/1178 useless extension candidates. Maximal degree in co-relation 3773. Up to 942 conditions per place. [2024-05-12 11:12:09,429 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 72 selfloop transitions, 18 changer transitions 0/97 dead transitions. [2024-05-12 11:12:09,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 97 transitions, 659 flow [2024-05-12 11:12:09,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 11:12:09,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 11:12:09,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-05-12 11:12:09,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4924812030075188 [2024-05-12 11:12:09,431 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 353 flow. Second operand 7 states and 131 transitions. [2024-05-12 11:12:09,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 97 transitions, 659 flow [2024-05-12 11:12:09,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 628 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 11:12:09,437 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 413 flow [2024-05-12 11:12:09,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=413, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-05-12 11:12:09,438 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2024-05-12 11:12:09,438 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 413 flow [2024-05-12 11:12:09,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:09,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:12:09,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:12:09,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 11:12:09,439 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:12:09,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:12:09,439 INFO L85 PathProgramCache]: Analyzing trace with hash -382172404, now seen corresponding path program 3 times [2024-05-12 11:12:09,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:12:09,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669274994] [2024-05-12 11:12:09,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:12:09,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:12:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:12:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:12:14,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:12:14,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669274994] [2024-05-12 11:12:14,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669274994] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:12:14,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:12:14,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 11:12:14,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222121589] [2024-05-12 11:12:14,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:12:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 11:12:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:12:14,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 11:12:14,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 11:12:14,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:12:14,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 413 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:14,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:12:14,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:12:14,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:12:15,062 INFO L124 PetriNetUnfolderBase]: 650/1250 cut-off events. [2024-05-12 11:12:15,063 INFO L125 PetriNetUnfolderBase]: For 3767/3767 co-relation queries the response was YES. [2024-05-12 11:12:15,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4133 conditions, 1250 events. 650/1250 cut-off events. For 3767/3767 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6868 event pairs, 226 based on Foata normal form. 1/1207 useless extension candidates. Maximal degree in co-relation 4099. Up to 1036 conditions per place. [2024-05-12 11:12:15,071 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 68 selfloop transitions, 12 changer transitions 0/87 dead transitions. [2024-05-12 11:12:15,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 87 transitions, 625 flow [2024-05-12 11:12:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 11:12:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 11:12:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-05-12 11:12:15,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2024-05-12 11:12:15,073 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 413 flow. Second operand 7 states and 118 transitions. [2024-05-12 11:12:15,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 87 transitions, 625 flow [2024-05-12 11:12:15,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 87 transitions, 612 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-05-12 11:12:15,083 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 429 flow [2024-05-12 11:12:15,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=429, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-05-12 11:12:15,084 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2024-05-12 11:12:15,084 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 429 flow [2024-05-12 11:12:15,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:15,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:12:15,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:12:15,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 11:12:15,085 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:12:15,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:12:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1395734837, now seen corresponding path program 2 times [2024-05-12 11:12:15,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:12:15,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901797557] [2024-05-12 11:12:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:12:15,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:12:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:12:19,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:12:19,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:12:19,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901797557] [2024-05-12 11:12:19,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901797557] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:12:19,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:12:19,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 11:12:19,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374767354] [2024-05-12 11:12:19,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:12:19,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 11:12:19,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:12:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 11:12:19,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 11:12:19,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:12:19,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 429 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:19,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:12:19,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:12:19,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:12:20,187 INFO L124 PetriNetUnfolderBase]: 683/1314 cut-off events. [2024-05-12 11:12:20,187 INFO L125 PetriNetUnfolderBase]: For 4489/4489 co-relation queries the response was YES. [2024-05-12 11:12:20,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4373 conditions, 1314 events. 683/1314 cut-off events. For 4489/4489 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7326 event pairs, 234 based on Foata normal form. 3/1270 useless extension candidates. Maximal degree in co-relation 4336. Up to 1069 conditions per place. [2024-05-12 11:12:20,197 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 69 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-05-12 11:12:20,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 655 flow [2024-05-12 11:12:20,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 11:12:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 11:12:20,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-05-12 11:12:20,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 11:12:20,199 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 429 flow. Second operand 7 states and 119 transitions. [2024-05-12 11:12:20,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 655 flow [2024-05-12 11:12:20,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 616 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-05-12 11:12:20,205 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 439 flow [2024-05-12 11:12:20,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=439, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2024-05-12 11:12:20,206 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 37 predicate places. [2024-05-12 11:12:20,206 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 439 flow [2024-05-12 11:12:20,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:20,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:12:20,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:12:20,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 11:12:20,207 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:12:20,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:12:20,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1176427325, now seen corresponding path program 3 times [2024-05-12 11:12:20,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:12:20,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389623025] [2024-05-12 11:12:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:12:20,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:12:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:12:24,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:12:24,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:12:24,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389623025] [2024-05-12 11:12:24,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389623025] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:12:24,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:12:24,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 11:12:24,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280290809] [2024-05-12 11:12:24,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:12:24,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 11:12:24,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:12:24,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 11:12:24,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 11:12:24,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:12:24,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 439 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:24,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:12:24,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:12:24,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:12:25,526 INFO L124 PetriNetUnfolderBase]: 677/1302 cut-off events. [2024-05-12 11:12:25,526 INFO L125 PetriNetUnfolderBase]: For 4795/4795 co-relation queries the response was YES. [2024-05-12 11:12:25,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4348 conditions, 1302 events. 677/1302 cut-off events. For 4795/4795 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7246 event pairs, 226 based on Foata normal form. 3/1258 useless extension candidates. Maximal degree in co-relation 4311. Up to 1018 conditions per place. [2024-05-12 11:12:25,535 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 70 selfloop transitions, 16 changer transitions 0/93 dead transitions. [2024-05-12 11:12:25,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 93 transitions, 675 flow [2024-05-12 11:12:25,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 11:12:25,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 11:12:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-05-12 11:12:25,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46616541353383456 [2024-05-12 11:12:25,537 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 439 flow. Second operand 7 states and 124 transitions. [2024-05-12 11:12:25,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 93 transitions, 675 flow [2024-05-12 11:12:25,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 93 transitions, 636 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-05-12 11:12:25,544 INFO L231 Difference]: Finished difference. Result has 81 places, 70 transitions, 437 flow [2024-05-12 11:12:25,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=437, PETRI_PLACES=81, PETRI_TRANSITIONS=70} [2024-05-12 11:12:25,545 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2024-05-12 11:12:25,545 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 70 transitions, 437 flow [2024-05-12 11:12:25,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:25,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:12:25,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:12:25,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 11:12:25,546 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:12:25,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:12:25,546 INFO L85 PathProgramCache]: Analyzing trace with hash -817178326, now seen corresponding path program 1 times [2024-05-12 11:12:25,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:12:25,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579290147] [2024-05-12 11:12:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:12:25,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:12:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:12:30,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:12:30,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:12:30,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579290147] [2024-05-12 11:12:30,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579290147] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:12:30,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:12:30,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:12:30,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260767728] [2024-05-12 11:12:30,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:12:30,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:12:30,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:12:30,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:12:30,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:12:31,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:12:31,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 70 transitions, 437 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:12:31,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:12:31,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:12:31,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:12:31,681 INFO L124 PetriNetUnfolderBase]: 699/1307 cut-off events. [2024-05-12 11:12:31,682 INFO L125 PetriNetUnfolderBase]: For 5213/5213 co-relation queries the response was YES. [2024-05-12 11:12:31,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4484 conditions, 1307 events. 699/1307 cut-off events. For 5213/5213 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7167 event pairs, 139 based on Foata normal form. 2/1263 useless extension candidates. Maximal degree in co-relation 4447. Up to 1045 conditions per place. [2024-05-12 11:12:31,689 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 89 selfloop transitions, 13 changer transitions 0/109 dead transitions. [2024-05-12 11:12:31,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 109 transitions, 759 flow [2024-05-12 11:12:31,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:12:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:12:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-05-12 11:12:31,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-05-12 11:12:31,691 INFO L175 Difference]: Start difference. First operand has 81 places, 70 transitions, 437 flow. Second operand 8 states and 146 transitions. [2024-05-12 11:12:31,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 109 transitions, 759 flow [2024-05-12 11:12:31,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 109 transitions, 712 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 11:12:31,697 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 437 flow [2024-05-12 11:12:31,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=437, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-05-12 11:12:31,698 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2024-05-12 11:12:31,698 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 437 flow [2024-05-12 11:12:31,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:12:31,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:12:31,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:12:31,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 11:12:31,699 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:12:31,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:12:31,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1364479914, now seen corresponding path program 2 times [2024-05-12 11:12:31,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:12:31,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329012992] [2024-05-12 11:12:31,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:12:31,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:12:31,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:12:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:12:36,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:12:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329012992] [2024-05-12 11:12:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329012992] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:12:36,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:12:36,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 11:12:36,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001774487] [2024-05-12 11:12:36,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:12:36,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 11:12:36,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:12:36,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 11:12:36,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 11:12:36,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 11:12:36,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 437 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:36,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:12:36,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 11:12:36,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:12:37,187 INFO L124 PetriNetUnfolderBase]: 613/1158 cut-off events. [2024-05-12 11:12:37,188 INFO L125 PetriNetUnfolderBase]: For 5602/5602 co-relation queries the response was YES. [2024-05-12 11:12:37,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4143 conditions, 1158 events. 613/1158 cut-off events. For 5602/5602 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6540 event pairs, 132 based on Foata normal form. 2/1119 useless extension candidates. Maximal degree in co-relation 4105. Up to 833 conditions per place. [2024-05-12 11:12:37,198 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 74 selfloop transitions, 25 changer transitions 0/107 dead transitions. [2024-05-12 11:12:37,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 107 transitions, 789 flow [2024-05-12 11:12:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:12:37,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:12:37,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-05-12 11:12:37,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 11:12:37,201 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 437 flow. Second operand 8 states and 152 transitions. [2024-05-12 11:12:37,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 107 transitions, 789 flow [2024-05-12 11:12:37,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 107 transitions, 758 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 11:12:37,207 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 497 flow [2024-05-12 11:12:37,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=497, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-05-12 11:12:37,207 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 43 predicate places. [2024-05-12 11:12:37,208 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 497 flow [2024-05-12 11:12:37,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:12:37,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:12:37,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:12:37,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 11:12:37,208 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:12:37,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:12:37,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1364480100, now seen corresponding path program 1 times [2024-05-12 11:12:37,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:12:37,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337294110] [2024-05-12 11:12:37,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:12:37,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:12:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:12:42,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:12:42,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:12:42,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337294110] [2024-05-12 11:12:42,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337294110] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:12:42,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:12:42,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:12:42,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309500706] [2024-05-12 11:12:42,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:12:42,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:12:42,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:12:42,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:12:42,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:12:42,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:12:42,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 497 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:12:42,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:12:42,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:12:42,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:12:43,383 INFO L124 PetriNetUnfolderBase]: 767/1414 cut-off events. [2024-05-12 11:12:43,383 INFO L125 PetriNetUnfolderBase]: For 6826/6826 co-relation queries the response was YES. [2024-05-12 11:12:43,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5086 conditions, 1414 events. 767/1414 cut-off events. For 6826/6826 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 7931 event pairs, 194 based on Foata normal form. 1/1369 useless extension candidates. Maximal degree in co-relation 5047. Up to 947 conditions per place. [2024-05-12 11:12:43,393 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 81 selfloop transitions, 29 changer transitions 0/117 dead transitions. [2024-05-12 11:12:43,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 117 transitions, 875 flow [2024-05-12 11:12:43,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:12:43,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:12:43,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-05-12 11:12:43,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 11:12:43,400 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 497 flow. Second operand 8 states and 152 transitions. [2024-05-12 11:12:43,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 117 transitions, 875 flow [2024-05-12 11:12:43,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 117 transitions, 840 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-05-12 11:12:43,408 INFO L231 Difference]: Finished difference. Result has 90 places, 81 transitions, 568 flow [2024-05-12 11:12:43,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=90, PETRI_TRANSITIONS=81} [2024-05-12 11:12:43,409 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2024-05-12 11:12:43,409 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 81 transitions, 568 flow [2024-05-12 11:12:43,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:12:43,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:12:43,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:12:43,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 11:12:43,410 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:12:43,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:12:43,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1369121730, now seen corresponding path program 2 times [2024-05-12 11:12:43,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:12:43,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620101058] [2024-05-12 11:12:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:12:43,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:12:43,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:12:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:12:48,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:12:48,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620101058] [2024-05-12 11:12:48,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620101058] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:12:48,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:12:48,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:12:48,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925775070] [2024-05-12 11:12:48,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:12:48,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:12:48,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:12:48,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:12:48,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:12:48,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:12:48,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 81 transitions, 568 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:12:48,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:12:48,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:12:48,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:12:48,717 INFO L124 PetriNetUnfolderBase]: 817/1470 cut-off events. [2024-05-12 11:12:48,717 INFO L125 PetriNetUnfolderBase]: For 8228/8228 co-relation queries the response was YES. [2024-05-12 11:12:48,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5822 conditions, 1470 events. 817/1470 cut-off events. For 8228/8228 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8179 event pairs, 192 based on Foata normal form. 1/1430 useless extension candidates. Maximal degree in co-relation 5780. Up to 1111 conditions per place. [2024-05-12 11:12:48,725 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 88 selfloop transitions, 26 changer transitions 0/121 dead transitions. [2024-05-12 11:12:48,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 121 transitions, 977 flow [2024-05-12 11:12:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:12:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:12:48,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-05-12 11:12:48,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967105263157895 [2024-05-12 11:12:48,726 INFO L175 Difference]: Start difference. First operand has 90 places, 81 transitions, 568 flow. Second operand 8 states and 151 transitions. [2024-05-12 11:12:48,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 121 transitions, 977 flow [2024-05-12 11:12:48,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 946 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-05-12 11:12:48,735 INFO L231 Difference]: Finished difference. Result has 95 places, 86 transitions, 644 flow [2024-05-12 11:12:48,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=644, PETRI_PLACES=95, PETRI_TRANSITIONS=86} [2024-05-12 11:12:48,735 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2024-05-12 11:12:48,736 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 86 transitions, 644 flow [2024-05-12 11:12:48,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:12:48,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:12:48,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:12:48,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 11:12:48,736 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:12:48,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:12:48,737 INFO L85 PathProgramCache]: Analyzing trace with hash -812416726, now seen corresponding path program 3 times [2024-05-12 11:12:48,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:12:48,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698784174] [2024-05-12 11:12:48,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:12:48,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:12:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:12:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:12:54,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:12:54,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698784174] [2024-05-12 11:12:54,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698784174] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:12:54,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:12:54,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:12:54,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758661145] [2024-05-12 11:12:54,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:12:54,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:12:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:12:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:12:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:12:54,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:12:54,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 86 transitions, 644 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:12:54,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:12:54,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:12:54,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:12:54,994 INFO L124 PetriNetUnfolderBase]: 839/1536 cut-off events. [2024-05-12 11:12:54,994 INFO L125 PetriNetUnfolderBase]: For 9356/9356 co-relation queries the response was YES. [2024-05-12 11:12:54,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6270 conditions, 1536 events. 839/1536 cut-off events. For 9356/9356 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8754 event pairs, 207 based on Foata normal form. 2/1486 useless extension candidates. Maximal degree in co-relation 6225. Up to 1281 conditions per place. [2024-05-12 11:12:55,003 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 94 selfloop transitions, 17 changer transitions 0/118 dead transitions. [2024-05-12 11:12:55,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 118 transitions, 972 flow [2024-05-12 11:12:55,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:12:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:12:55,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-05-12 11:12:55,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46381578947368424 [2024-05-12 11:12:55,005 INFO L175 Difference]: Start difference. First operand has 95 places, 86 transitions, 644 flow. Second operand 8 states and 141 transitions. [2024-05-12 11:12:55,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 118 transitions, 972 flow [2024-05-12 11:12:55,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 118 transitions, 946 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-05-12 11:12:55,019 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 679 flow [2024-05-12 11:12:55,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=679, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2024-05-12 11:12:55,019 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-05-12 11:12:55,020 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 679 flow [2024-05-12 11:12:55,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:12:55,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:12:55,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:12:55,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 11:12:55,021 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:12:55,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:12:55,021 INFO L85 PathProgramCache]: Analyzing trace with hash 53333152, now seen corresponding path program 3 times [2024-05-12 11:12:55,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:12:55,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569565410] [2024-05-12 11:12:55,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:12:55,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:12:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:13:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:13:00,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:13:00,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569565410] [2024-05-12 11:13:00,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569565410] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:13:00,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:13:00,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:13:00,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090861563] [2024-05-12 11:13:00,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:13:00,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:13:00,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:13:00,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:13:00,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:13:00,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:13:00,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 679 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:00,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:13:00,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:13:00,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:13:01,205 INFO L124 PetriNetUnfolderBase]: 833/1507 cut-off events. [2024-05-12 11:13:01,205 INFO L125 PetriNetUnfolderBase]: For 9751/9751 co-relation queries the response was YES. [2024-05-12 11:13:01,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6290 conditions, 1507 events. 833/1507 cut-off events. For 9751/9751 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8453 event pairs, 196 based on Foata normal form. 3/1465 useless extension candidates. Maximal degree in co-relation 6243. Up to 1162 conditions per place. [2024-05-12 11:13:01,215 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 92 selfloop transitions, 23 changer transitions 0/122 dead transitions. [2024-05-12 11:13:01,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 122 transitions, 1017 flow [2024-05-12 11:13:01,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:13:01,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:13:01,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-05-12 11:13:01,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-05-12 11:13:01,221 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 679 flow. Second operand 8 states and 148 transitions. [2024-05-12 11:13:01,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 122 transitions, 1017 flow [2024-05-12 11:13:01,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 122 transitions, 974 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 11:13:01,237 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 688 flow [2024-05-12 11:13:01,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=688, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2024-05-12 11:13:01,237 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 59 predicate places. [2024-05-12 11:13:01,237 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 688 flow [2024-05-12 11:13:01,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:01,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:13:01,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:13:01,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 11:13:01,238 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:13:01,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:13:01,239 INFO L85 PathProgramCache]: Analyzing trace with hash -546118472, now seen corresponding path program 4 times [2024-05-12 11:13:01,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:13:01,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600584563] [2024-05-12 11:13:01,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:13:01,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:13:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:13:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:13:06,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:13:06,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600584563] [2024-05-12 11:13:06,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600584563] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:13:06,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:13:06,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:13:06,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999846985] [2024-05-12 11:13:06,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:13:06,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:13:06,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:13:06,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:13:06,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:13:06,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:13:06,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 688 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:06,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:13:06,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:13:06,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:13:07,441 INFO L124 PetriNetUnfolderBase]: 866/1635 cut-off events. [2024-05-12 11:13:07,441 INFO L125 PetriNetUnfolderBase]: For 10836/10836 co-relation queries the response was YES. [2024-05-12 11:13:07,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6689 conditions, 1635 events. 866/1635 cut-off events. For 10836/10836 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9677 event pairs, 271 based on Foata normal form. 3/1581 useless extension candidates. Maximal degree in co-relation 6641. Up to 1314 conditions per place. [2024-05-12 11:13:07,451 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 93 selfloop transitions, 16 changer transitions 0/116 dead transitions. [2024-05-12 11:13:07,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 116 transitions, 1003 flow [2024-05-12 11:13:07,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:13:07,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:13:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-05-12 11:13:07,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506578947368421 [2024-05-12 11:13:07,453 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 688 flow. Second operand 8 states and 137 transitions. [2024-05-12 11:13:07,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 116 transitions, 1003 flow [2024-05-12 11:13:07,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 116 transitions, 952 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-05-12 11:13:07,468 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 708 flow [2024-05-12 11:13:07,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=708, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-05-12 11:13:07,469 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 60 predicate places. [2024-05-12 11:13:07,469 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 708 flow [2024-05-12 11:13:07,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:07,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:13:07,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:13:07,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 11:13:07,472 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:13:07,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:13:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash 318116490, now seen corresponding path program 1 times [2024-05-12 11:13:07,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:13:07,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031760971] [2024-05-12 11:13:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:13:07,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:13:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:13:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:13:11,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:13:11,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031760971] [2024-05-12 11:13:11,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031760971] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:13:11,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:13:11,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:13:11,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641053184] [2024-05-12 11:13:11,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:13:11,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:13:11,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:13:11,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:13:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:13:12,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:13:12,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 708 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:12,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:13:12,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:13:12,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:13:12,731 INFO L124 PetriNetUnfolderBase]: 868/1642 cut-off events. [2024-05-12 11:13:12,732 INFO L125 PetriNetUnfolderBase]: For 11098/11098 co-relation queries the response was YES. [2024-05-12 11:13:12,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6673 conditions, 1642 events. 868/1642 cut-off events. For 11098/11098 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9723 event pairs, 270 based on Foata normal form. 2/1587 useless extension candidates. Maximal degree in co-relation 6624. Up to 1350 conditions per place. [2024-05-12 11:13:12,740 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 95 selfloop transitions, 16 changer transitions 0/118 dead transitions. [2024-05-12 11:13:12,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 118 transitions, 1016 flow [2024-05-12 11:13:12,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:13:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:13:12,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-05-12 11:13:12,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-05-12 11:13:12,741 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 708 flow. Second operand 8 states and 134 transitions. [2024-05-12 11:13:12,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 118 transitions, 1016 flow [2024-05-12 11:13:12,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 118 transitions, 978 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 11:13:12,757 INFO L231 Difference]: Finished difference. Result has 105 places, 96 transitions, 755 flow [2024-05-12 11:13:12,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=755, PETRI_PLACES=105, PETRI_TRANSITIONS=96} [2024-05-12 11:13:12,758 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 63 predicate places. [2024-05-12 11:13:12,758 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 96 transitions, 755 flow [2024-05-12 11:13:12,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:12,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:13:12,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:13:12,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 11:13:12,759 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:13:12,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:13:12,759 INFO L85 PathProgramCache]: Analyzing trace with hash 308933236, now seen corresponding path program 4 times [2024-05-12 11:13:12,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:13:12,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95637870] [2024-05-12 11:13:12,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:13:12,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:13:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:13:17,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:13:17,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:13:17,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95637870] [2024-05-12 11:13:17,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95637870] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:13:17,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:13:17,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:13:17,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916771208] [2024-05-12 11:13:17,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:13:17,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:13:17,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:13:17,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:13:17,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:13:17,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:13:17,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 96 transitions, 755 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:17,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:13:17,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:13:17,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:13:18,320 INFO L124 PetriNetUnfolderBase]: 864/1627 cut-off events. [2024-05-12 11:13:18,320 INFO L125 PetriNetUnfolderBase]: For 11594/11594 co-relation queries the response was YES. [2024-05-12 11:13:18,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6745 conditions, 1627 events. 864/1627 cut-off events. For 11594/11594 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9587 event pairs, 269 based on Foata normal form. 2/1574 useless extension candidates. Maximal degree in co-relation 6694. Up to 1347 conditions per place. [2024-05-12 11:13:18,329 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 100 selfloop transitions, 14 changer transitions 0/121 dead transitions. [2024-05-12 11:13:18,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 121 transitions, 1059 flow [2024-05-12 11:13:18,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:13:18,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:13:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-05-12 11:13:18,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440789473684211 [2024-05-12 11:13:18,330 INFO L175 Difference]: Start difference. First operand has 105 places, 96 transitions, 755 flow. Second operand 8 states and 135 transitions. [2024-05-12 11:13:18,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 121 transitions, 1059 flow [2024-05-12 11:13:18,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 121 transitions, 1008 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-05-12 11:13:18,343 INFO L231 Difference]: Finished difference. Result has 108 places, 96 transitions, 737 flow [2024-05-12 11:13:18,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=737, PETRI_PLACES=108, PETRI_TRANSITIONS=96} [2024-05-12 11:13:18,344 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2024-05-12 11:13:18,344 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 96 transitions, 737 flow [2024-05-12 11:13:18,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:18,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:13:18,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:13:18,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 11:13:18,345 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:13:18,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:13:18,345 INFO L85 PathProgramCache]: Analyzing trace with hash 308933422, now seen corresponding path program 5 times [2024-05-12 11:13:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:13:18,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497804862] [2024-05-12 11:13:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:13:18,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:13:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:13:23,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:13:23,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:13:23,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497804862] [2024-05-12 11:13:23,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497804862] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:13:23,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:13:23,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:13:23,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242850608] [2024-05-12 11:13:23,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:13:23,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:13:23,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:13:23,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:13:23,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:13:24,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:13:24,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 96 transitions, 737 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:24,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:13:24,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:13:24,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:13:24,598 INFO L124 PetriNetUnfolderBase]: 875/1625 cut-off events. [2024-05-12 11:13:24,598 INFO L125 PetriNetUnfolderBase]: For 11852/11852 co-relation queries the response was YES. [2024-05-12 11:13:24,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6791 conditions, 1625 events. 875/1625 cut-off events. For 11852/11852 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9468 event pairs, 250 based on Foata normal form. 1/1576 useless extension candidates. Maximal degree in co-relation 6739. Up to 1222 conditions per place. [2024-05-12 11:13:24,606 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 94 selfloop transitions, 25 changer transitions 0/126 dead transitions. [2024-05-12 11:13:24,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 126 transitions, 1131 flow [2024-05-12 11:13:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:13:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:13:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-05-12 11:13:24,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2024-05-12 11:13:24,608 INFO L175 Difference]: Start difference. First operand has 108 places, 96 transitions, 737 flow. Second operand 8 states and 142 transitions. [2024-05-12 11:13:24,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 126 transitions, 1131 flow [2024-05-12 11:13:24,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 126 transitions, 1086 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 11:13:24,627 INFO L231 Difference]: Finished difference. Result has 109 places, 98 transitions, 769 flow [2024-05-12 11:13:24,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=769, PETRI_PLACES=109, PETRI_TRANSITIONS=98} [2024-05-12 11:13:24,627 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2024-05-12 11:13:24,628 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 98 transitions, 769 flow [2024-05-12 11:13:24,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:24,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:13:24,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:13:24,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 11:13:24,628 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:13:24,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:13:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash -181482744, now seen corresponding path program 6 times [2024-05-12 11:13:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:13:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517426340] [2024-05-12 11:13:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:13:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:13:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:13:29,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:13:29,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:13:29,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517426340] [2024-05-12 11:13:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517426340] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:13:29,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:13:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:13:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317716811] [2024-05-12 11:13:29,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:13:29,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:13:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:13:29,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:13:29,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:13:29,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:13:29,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 98 transitions, 769 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:29,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:13:29,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:13:29,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:13:30,475 INFO L124 PetriNetUnfolderBase]: 869/1624 cut-off events. [2024-05-12 11:13:30,475 INFO L125 PetriNetUnfolderBase]: For 12383/12383 co-relation queries the response was YES. [2024-05-12 11:13:30,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6780 conditions, 1624 events. 869/1624 cut-off events. For 12383/12383 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9528 event pairs, 250 based on Foata normal form. 3/1575 useless extension candidates. Maximal degree in co-relation 6727. Up to 1278 conditions per place. [2024-05-12 11:13:30,484 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 101 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2024-05-12 11:13:30,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 127 transitions, 1105 flow [2024-05-12 11:13:30,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:13:30,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:13:30,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-05-12 11:13:30,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46710526315789475 [2024-05-12 11:13:30,489 INFO L175 Difference]: Start difference. First operand has 109 places, 98 transitions, 769 flow. Second operand 8 states and 142 transitions. [2024-05-12 11:13:30,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 127 transitions, 1105 flow [2024-05-12 11:13:30,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 127 transitions, 1003 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 11:13:30,513 INFO L231 Difference]: Finished difference. Result has 109 places, 98 transitions, 711 flow [2024-05-12 11:13:30,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=711, PETRI_PLACES=109, PETRI_TRANSITIONS=98} [2024-05-12 11:13:30,513 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 67 predicate places. [2024-05-12 11:13:30,514 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 98 transitions, 711 flow [2024-05-12 11:13:30,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-05-12 11:13:30,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:13:30,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:13:30,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 11:13:30,514 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:13:30,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:13:30,515 INFO L85 PathProgramCache]: Analyzing trace with hash 318445493, now seen corresponding path program 1 times [2024-05-12 11:13:30,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:13:30,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487382294] [2024-05-12 11:13:30,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:13:30,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:13:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:13:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:13:36,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:13:36,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487382294] [2024-05-12 11:13:36,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487382294] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:13:36,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:13:36,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:13:36,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72751040] [2024-05-12 11:13:36,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:13:36,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:13:36,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:13:36,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:13:36,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:13:36,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:13:36,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 98 transitions, 711 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) [2024-05-12 11:13:36,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:13:36,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:13:36,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:13:37,667 INFO L124 PetriNetUnfolderBase]: 866/1671 cut-off events. [2024-05-12 11:13:37,667 INFO L125 PetriNetUnfolderBase]: For 12199/12199 co-relation queries the response was YES. [2024-05-12 11:13:37,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6518 conditions, 1671 events. 866/1671 cut-off events. For 12199/12199 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10115 event pairs, 261 based on Foata normal form. 2/1606 useless extension candidates. Maximal degree in co-relation 6466. Up to 1331 conditions per place. [2024-05-12 11:13:37,676 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 100 selfloop transitions, 19 changer transitions 0/126 dead transitions. [2024-05-12 11:13:37,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 126 transitions, 1027 flow [2024-05-12 11:13:37,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:13:37,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:13:37,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-05-12 11:13:37,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 11:13:37,677 INFO L175 Difference]: Start difference. First operand has 109 places, 98 transitions, 711 flow. Second operand 8 states and 136 transitions. [2024-05-12 11:13:37,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 126 transitions, 1027 flow [2024-05-12 11:13:37,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 126 transitions, 974 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 11:13:37,689 INFO L231 Difference]: Finished difference. Result has 111 places, 100 transitions, 725 flow [2024-05-12 11:13:37,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=725, PETRI_PLACES=111, PETRI_TRANSITIONS=100} [2024-05-12 11:13:37,690 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2024-05-12 11:13:37,690 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 100 transitions, 725 flow [2024-05-12 11:13:37,690 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) [2024-05-12 11:13:37,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:13:37,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:13:37,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 11:13:37,691 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:13:37,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:13:37,691 INFO L85 PathProgramCache]: Analyzing trace with hash -654513594, now seen corresponding path program 1 times [2024-05-12 11:13:37,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:13:37,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837409360] [2024-05-12 11:13:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:13:37,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:13:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:13:43,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:13:43,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:13:43,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837409360] [2024-05-12 11:13:43,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837409360] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:13:43,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:13:43,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:13:43,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352952922] [2024-05-12 11:13:43,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:13:43,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:13:43,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:13:43,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:13:43,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:13:43,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:13:43,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 100 transitions, 725 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) [2024-05-12 11:13:43,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:13:43,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:13:43,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:13:44,448 INFO L124 PetriNetUnfolderBase]: 888/1634 cut-off events. [2024-05-12 11:13:44,448 INFO L125 PetriNetUnfolderBase]: For 12832/12832 co-relation queries the response was YES. [2024-05-12 11:13:44,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 1634 events. 888/1634 cut-off events. For 12832/12832 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9440 event pairs, 183 based on Foata normal form. 2/1582 useless extension candidates. Maximal degree in co-relation 6520. Up to 1311 conditions per place. [2024-05-12 11:13:44,457 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 123 selfloop transitions, 15 changer transitions 0/145 dead transitions. [2024-05-12 11:13:44,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 145 transitions, 1153 flow [2024-05-12 11:13:44,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:13:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:13:44,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-05-12 11:13:44,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-05-12 11:13:44,458 INFO L175 Difference]: Start difference. First operand has 111 places, 100 transitions, 725 flow. Second operand 9 states and 163 transitions. [2024-05-12 11:13:44,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 145 transitions, 1153 flow [2024-05-12 11:13:44,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 145 transitions, 1108 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-05-12 11:13:44,480 INFO L231 Difference]: Finished difference. Result has 115 places, 102 transitions, 737 flow [2024-05-12 11:13:44,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=737, PETRI_PLACES=115, PETRI_TRANSITIONS=102} [2024-05-12 11:13:44,481 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-05-12 11:13:44,481 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 102 transitions, 737 flow [2024-05-12 11:13:44,481 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) [2024-05-12 11:13:44,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:13:44,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:13:44,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 11:13:44,482 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:13:44,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:13:44,482 INFO L85 PathProgramCache]: Analyzing trace with hash -650794524, now seen corresponding path program 2 times [2024-05-12 11:13:44,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:13:44,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088755951] [2024-05-12 11:13:44,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:13:44,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:13:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:13:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:13:49,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:13:49,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088755951] [2024-05-12 11:13:49,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088755951] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:13:49,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:13:49,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:13:49,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569988650] [2024-05-12 11:13:49,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:13:49,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:13:49,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:13:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:13:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:13:49,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 11:13:49,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 102 transitions, 737 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) [2024-05-12 11:13:49,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:13:49,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 11:13:49,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:13:50,101 INFO L124 PetriNetUnfolderBase]: 834/1563 cut-off events. [2024-05-12 11:13:50,101 INFO L125 PetriNetUnfolderBase]: For 16302/16302 co-relation queries the response was YES. [2024-05-12 11:13:50,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6657 conditions, 1563 events. 834/1563 cut-off events. For 16302/16302 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9466 event pairs, 155 based on Foata normal form. 2/1505 useless extension candidates. Maximal degree in co-relation 6602. Up to 759 conditions per place. [2024-05-12 11:13:50,109 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 95 selfloop transitions, 46 changer transitions 0/149 dead transitions. [2024-05-12 11:13:50,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 149 transitions, 1339 flow [2024-05-12 11:13:50,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:13:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:13:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-05-12 11:13:50,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233918128654971 [2024-05-12 11:13:50,110 INFO L175 Difference]: Start difference. First operand has 115 places, 102 transitions, 737 flow. Second operand 9 states and 179 transitions. [2024-05-12 11:13:50,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 149 transitions, 1339 flow [2024-05-12 11:13:50,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 149 transitions, 1300 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-05-12 11:13:50,129 INFO L231 Difference]: Finished difference. Result has 118 places, 110 transitions, 913 flow [2024-05-12 11:13:50,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=913, PETRI_PLACES=118, PETRI_TRANSITIONS=110} [2024-05-12 11:13:50,130 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2024-05-12 11:13:50,130 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 110 transitions, 913 flow [2024-05-12 11:13:50,130 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) [2024-05-12 11:13:50,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:13:50,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:13:50,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 11:13:50,131 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:13:50,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:13:50,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1647764655, now seen corresponding path program 1 times [2024-05-12 11:13:50,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:13:50,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835978586] [2024-05-12 11:13:50,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:13:50,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:13:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:13:57,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:13:57,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:13:57,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835978586] [2024-05-12 11:13:57,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835978586] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:13:57,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:13:57,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:13:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313736923] [2024-05-12 11:13:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:13:57,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:13:57,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:13:57,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:13:57,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:13:57,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:13:57,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 110 transitions, 913 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) [2024-05-12 11:13:57,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:13:57,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:13:57,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:13:58,037 INFO L124 PetriNetUnfolderBase]: 1042/1914 cut-off events. [2024-05-12 11:13:58,037 INFO L125 PetriNetUnfolderBase]: For 20073/20073 co-relation queries the response was YES. [2024-05-12 11:13:58,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8439 conditions, 1914 events. 1042/1914 cut-off events. For 20073/20073 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11496 event pairs, 225 based on Foata normal form. 2/1846 useless extension candidates. Maximal degree in co-relation 8382. Up to 1254 conditions per place. [2024-05-12 11:13:58,048 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 110 selfloop transitions, 38 changer transitions 0/155 dead transitions. [2024-05-12 11:13:58,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 155 transitions, 1429 flow [2024-05-12 11:13:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:13:58,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:13:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-05-12 11:13:58,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-05-12 11:13:58,049 INFO L175 Difference]: Start difference. First operand has 118 places, 110 transitions, 913 flow. Second operand 9 states and 169 transitions. [2024-05-12 11:13:58,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 155 transitions, 1429 flow [2024-05-12 11:13:58,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 155 transitions, 1379 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-05-12 11:13:58,074 INFO L231 Difference]: Finished difference. Result has 124 places, 114 transitions, 984 flow [2024-05-12 11:13:58,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=984, PETRI_PLACES=124, PETRI_TRANSITIONS=114} [2024-05-12 11:13:58,074 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2024-05-12 11:13:58,074 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 114 transitions, 984 flow [2024-05-12 11:13:58,075 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) [2024-05-12 11:13:58,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:13:58,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:13:58,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 11:13:58,075 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:13:58,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:13:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash 441001422, now seen corresponding path program 3 times [2024-05-12 11:13:58,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:13:58,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401608560] [2024-05-12 11:13:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:13:58,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:13:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:14:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:14:03,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:14:03,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401608560] [2024-05-12 11:14:03,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401608560] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:14:03,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:14:03,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:14:03,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370652118] [2024-05-12 11:14:03,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:14:03,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:14:03,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:14:03,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:14:03,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:14:03,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:14:03,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 114 transitions, 984 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) [2024-05-12 11:14:03,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:14:03,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:14:03,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:14:04,605 INFO L124 PetriNetUnfolderBase]: 1040/1836 cut-off events. [2024-05-12 11:14:04,606 INFO L125 PetriNetUnfolderBase]: For 20270/20270 co-relation queries the response was YES. [2024-05-12 11:14:04,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8523 conditions, 1836 events. 1040/1836 cut-off events. For 20270/20270 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10539 event pairs, 155 based on Foata normal form. 1/1792 useless extension candidates. Maximal degree in co-relation 8464. Up to 1125 conditions per place. [2024-05-12 11:14:04,615 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 119 selfloop transitions, 42 changer transitions 0/168 dead transitions. [2024-05-12 11:14:04,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 168 transitions, 1579 flow [2024-05-12 11:14:04,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:14:04,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:14:04,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-05-12 11:14:04,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 11:14:04,616 INFO L175 Difference]: Start difference. First operand has 124 places, 114 transitions, 984 flow. Second operand 9 states and 171 transitions. [2024-05-12 11:14:04,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 168 transitions, 1579 flow [2024-05-12 11:14:04,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 168 transitions, 1533 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-05-12 11:14:04,644 INFO L231 Difference]: Finished difference. Result has 131 places, 126 transitions, 1157 flow [2024-05-12 11:14:04,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1157, PETRI_PLACES=131, PETRI_TRANSITIONS=126} [2024-05-12 11:14:04,645 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 89 predicate places. [2024-05-12 11:14:04,645 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 126 transitions, 1157 flow [2024-05-12 11:14:04,645 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) [2024-05-12 11:14:04,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:14:04,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:14:04,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 11:14:04,646 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:14:04,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:14:04,646 INFO L85 PathProgramCache]: Analyzing trace with hash -506696387, now seen corresponding path program 2 times [2024-05-12 11:14:04,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:14:04,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343975877] [2024-05-12 11:14:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:14:04,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:14:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:14:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:14:11,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:14:11,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343975877] [2024-05-12 11:14:11,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343975877] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:14:11,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:14:11,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:14:11,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878534413] [2024-05-12 11:14:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:14:11,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:14:11,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:14:11,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:14:11,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:14:11,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 11:14:11,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 126 transitions, 1157 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) [2024-05-12 11:14:11,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:14:11,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 11:14:11,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:14:12,294 INFO L124 PetriNetUnfolderBase]: 890/1646 cut-off events. [2024-05-12 11:14:12,294 INFO L125 PetriNetUnfolderBase]: For 22021/22021 co-relation queries the response was YES. [2024-05-12 11:14:12,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8072 conditions, 1646 events. 890/1646 cut-off events. For 22021/22021 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9966 event pairs, 176 based on Foata normal form. 2/1588 useless extension candidates. Maximal degree in co-relation 8008. Up to 1270 conditions per place. [2024-05-12 11:14:12,304 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 128 selfloop transitions, 25 changer transitions 0/161 dead transitions. [2024-05-12 11:14:12,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 161 transitions, 1597 flow [2024-05-12 11:14:12,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:14:12,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:14:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-05-12 11:14:12,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-05-12 11:14:12,306 INFO L175 Difference]: Start difference. First operand has 131 places, 126 transitions, 1157 flow. Second operand 9 states and 167 transitions. [2024-05-12 11:14:12,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 161 transitions, 1597 flow [2024-05-12 11:14:12,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 161 transitions, 1571 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-05-12 11:14:12,341 INFO L231 Difference]: Finished difference. Result has 137 places, 128 transitions, 1210 flow [2024-05-12 11:14:12,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1210, PETRI_PLACES=137, PETRI_TRANSITIONS=128} [2024-05-12 11:14:12,342 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 95 predicate places. [2024-05-12 11:14:12,342 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 128 transitions, 1210 flow [2024-05-12 11:14:12,342 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) [2024-05-12 11:14:12,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:14:12,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:14:12,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 11:14:12,343 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:14:12,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:14:12,343 INFO L85 PathProgramCache]: Analyzing trace with hash 585093762, now seen corresponding path program 4 times [2024-05-12 11:14:12,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:14:12,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363410127] [2024-05-12 11:14:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:14:12,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:14:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:14:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:14:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:14:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363410127] [2024-05-12 11:14:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363410127] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:14:17,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:14:17,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:14:17,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332872101] [2024-05-12 11:14:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:14:17,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:14:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:14:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:14:17,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:14:17,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:14:17,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 128 transitions, 1210 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) [2024-05-12 11:14:17,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:14:17,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:14:17,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:14:18,656 INFO L124 PetriNetUnfolderBase]: 1095/1966 cut-off events. [2024-05-12 11:14:18,656 INFO L125 PetriNetUnfolderBase]: For 24425/24425 co-relation queries the response was YES. [2024-05-12 11:14:18,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9680 conditions, 1966 events. 1095/1966 cut-off events. For 24425/24425 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11606 event pairs, 182 based on Foata normal form. 3/1907 useless extension candidates. Maximal degree in co-relation 9614. Up to 1529 conditions per place. [2024-05-12 11:14:18,668 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 137 selfloop transitions, 26 changer transitions 0/170 dead transitions. [2024-05-12 11:14:18,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 170 transitions, 1697 flow [2024-05-12 11:14:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:14:18,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:14:18,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-05-12 11:14:18,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-05-12 11:14:18,670 INFO L175 Difference]: Start difference. First operand has 137 places, 128 transitions, 1210 flow. Second operand 9 states and 166 transitions. [2024-05-12 11:14:18,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 170 transitions, 1697 flow [2024-05-12 11:14:18,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 170 transitions, 1638 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-05-12 11:14:18,712 INFO L231 Difference]: Finished difference. Result has 139 places, 131 transitions, 1250 flow [2024-05-12 11:14:18,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1250, PETRI_PLACES=139, PETRI_TRANSITIONS=131} [2024-05-12 11:14:18,713 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 97 predicate places. [2024-05-12 11:14:18,713 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 131 transitions, 1250 flow [2024-05-12 11:14:18,713 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) [2024-05-12 11:14:18,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:14:18,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:14:18,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 11:14:18,713 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:14:18,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:14:18,714 INFO L85 PathProgramCache]: Analyzing trace with hash 584892169, now seen corresponding path program 3 times [2024-05-12 11:14:18,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:14:18,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058052943] [2024-05-12 11:14:18,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:14:18,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:14:18,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:14:25,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:14:25,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:14:25,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058052943] [2024-05-12 11:14:25,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058052943] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:14:25,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:14:25,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:14:25,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881368438] [2024-05-12 11:14:25,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:14:25,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:14:25,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:14:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:14:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:14:25,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:14:25,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 131 transitions, 1250 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) [2024-05-12 11:14:25,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:14:25,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:14:25,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:14:26,390 INFO L124 PetriNetUnfolderBase]: 1117/1991 cut-off events. [2024-05-12 11:14:26,391 INFO L125 PetriNetUnfolderBase]: For 25229/25229 co-relation queries the response was YES. [2024-05-12 11:14:26,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9923 conditions, 1991 events. 1117/1991 cut-off events. For 25229/25229 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11757 event pairs, 186 based on Foata normal form. 2/1934 useless extension candidates. Maximal degree in co-relation 9856. Up to 1536 conditions per place. [2024-05-12 11:14:26,402 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 136 selfloop transitions, 29 changer transitions 0/172 dead transitions. [2024-05-12 11:14:26,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 172 transitions, 1730 flow [2024-05-12 11:14:26,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:14:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:14:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-05-12 11:14:26,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-05-12 11:14:26,404 INFO L175 Difference]: Start difference. First operand has 139 places, 131 transitions, 1250 flow. Second operand 9 states and 167 transitions. [2024-05-12 11:14:26,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 172 transitions, 1730 flow [2024-05-12 11:14:26,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 172 transitions, 1670 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-05-12 11:14:26,452 INFO L231 Difference]: Finished difference. Result has 141 places, 133 transitions, 1281 flow [2024-05-12 11:14:26,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1281, PETRI_PLACES=141, PETRI_TRANSITIONS=133} [2024-05-12 11:14:26,453 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-05-12 11:14:26,453 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 133 transitions, 1281 flow [2024-05-12 11:14:26,453 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) [2024-05-12 11:14:26,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:14:26,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:14:26,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 11:14:26,453 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:14:26,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:14:26,453 INFO L85 PathProgramCache]: Analyzing trace with hash 584891952, now seen corresponding path program 5 times [2024-05-12 11:14:26,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:14:26,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723766082] [2024-05-12 11:14:26,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:14:26,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:14:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:14:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:14:32,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:14:32,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723766082] [2024-05-12 11:14:32,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723766082] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:14:32,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:14:32,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:14:32,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128644074] [2024-05-12 11:14:32,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:14:32,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:14:32,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:14:32,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:14:32,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:14:32,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:14:32,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 133 transitions, 1281 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) [2024-05-12 11:14:32,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:14:32,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:14:32,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:14:33,396 INFO L124 PetriNetUnfolderBase]: 1141/2034 cut-off events. [2024-05-12 11:14:33,396 INFO L125 PetriNetUnfolderBase]: For 26868/26868 co-relation queries the response was YES. [2024-05-12 11:14:33,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10275 conditions, 2034 events. 1141/2034 cut-off events. For 26868/26868 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12013 event pairs, 178 based on Foata normal form. 1/1974 useless extension candidates. Maximal degree in co-relation 10207. Up to 1544 conditions per place. [2024-05-12 11:14:33,409 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 138 selfloop transitions, 33 changer transitions 0/178 dead transitions. [2024-05-12 11:14:33,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 178 transitions, 1877 flow [2024-05-12 11:14:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:14:33,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:14:33,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-05-12 11:14:33,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-05-12 11:14:33,411 INFO L175 Difference]: Start difference. First operand has 141 places, 133 transitions, 1281 flow. Second operand 9 states and 169 transitions. [2024-05-12 11:14:33,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 178 transitions, 1877 flow [2024-05-12 11:14:33,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 178 transitions, 1806 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 11:14:33,460 INFO L231 Difference]: Finished difference. Result has 144 places, 139 transitions, 1359 flow [2024-05-12 11:14:33,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1359, PETRI_PLACES=144, PETRI_TRANSITIONS=139} [2024-05-12 11:14:33,460 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 102 predicate places. [2024-05-12 11:14:33,461 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 139 transitions, 1359 flow [2024-05-12 11:14:33,461 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) [2024-05-12 11:14:33,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:14:33,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:14:33,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 11:14:33,461 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:14:33,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:14:33,461 INFO L85 PathProgramCache]: Analyzing trace with hash -506903994, now seen corresponding path program 6 times [2024-05-12 11:14:33,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:14:33,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302473763] [2024-05-12 11:14:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:14:33,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:14:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:14:38,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:14:38,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:14:38,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302473763] [2024-05-12 11:14:38,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302473763] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:14:38,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:14:38,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 11:14:38,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270695729] [2024-05-12 11:14:38,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:14:38,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 11:14:38,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:14:38,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 11:14:38,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 11:14:38,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 11:14:38,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 139 transitions, 1359 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) [2024-05-12 11:14:38,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:14:38,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 11:14:38,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:14:39,360 INFO L124 PetriNetUnfolderBase]: 995/1809 cut-off events. [2024-05-12 11:14:39,360 INFO L125 PetriNetUnfolderBase]: For 29496/29496 co-relation queries the response was YES. [2024-05-12 11:14:39,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9536 conditions, 1809 events. 995/1809 cut-off events. For 29496/29496 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10965 event pairs, 182 based on Foata normal form. 2/1751 useless extension candidates. Maximal degree in co-relation 9466. Up to 1310 conditions per place. [2024-05-12 11:14:39,372 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 133 selfloop transitions, 37 changer transitions 0/178 dead transitions. [2024-05-12 11:14:39,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 178 transitions, 1952 flow [2024-05-12 11:14:39,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:14:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:14:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-05-12 11:14:39,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-05-12 11:14:39,374 INFO L175 Difference]: Start difference. First operand has 144 places, 139 transitions, 1359 flow. Second operand 9 states and 174 transitions. [2024-05-12 11:14:39,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 178 transitions, 1952 flow [2024-05-12 11:14:39,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 178 transitions, 1910 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-05-12 11:14:39,419 INFO L231 Difference]: Finished difference. Result has 150 places, 144 transitions, 1485 flow [2024-05-12 11:14:39,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1485, PETRI_PLACES=150, PETRI_TRANSITIONS=144} [2024-05-12 11:14:39,420 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-05-12 11:14:39,420 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 144 transitions, 1485 flow [2024-05-12 11:14:39,420 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) [2024-05-12 11:14:39,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:14:39,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:14:39,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 11:14:39,420 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:14:39,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:14:39,421 INFO L85 PathProgramCache]: Analyzing trace with hash -34008672, now seen corresponding path program 7 times [2024-05-12 11:14:39,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:14:39,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094689358] [2024-05-12 11:14:39,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:14:39,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:14:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:14:44,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:14:44,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:14:44,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094689358] [2024-05-12 11:14:44,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094689358] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:14:44,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:14:44,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:14:44,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180556384] [2024-05-12 11:14:44,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:14:44,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:14:44,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:14:44,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:14:44,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:14:45,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:14:45,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 144 transitions, 1485 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) [2024-05-12 11:14:45,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:14:45,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:14:45,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:14:45,839 INFO L124 PetriNetUnfolderBase]: 1222/2202 cut-off events. [2024-05-12 11:14:45,840 INFO L125 PetriNetUnfolderBase]: For 33371/33371 co-relation queries the response was YES. [2024-05-12 11:14:45,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11586 conditions, 2202 events. 1222/2202 cut-off events. For 33371/33371 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13335 event pairs, 300 based on Foata normal form. 3/2144 useless extension candidates. Maximal degree in co-relation 11513. Up to 1784 conditions per place. [2024-05-12 11:14:45,855 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 153 selfloop transitions, 22 changer transitions 0/182 dead transitions. [2024-05-12 11:14:45,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 182 transitions, 1992 flow [2024-05-12 11:14:45,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:14:45,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:14:45,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-05-12 11:14:45,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678362573099415 [2024-05-12 11:14:45,857 INFO L175 Difference]: Start difference. First operand has 150 places, 144 transitions, 1485 flow. Second operand 9 states and 160 transitions. [2024-05-12 11:14:45,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 182 transitions, 1992 flow [2024-05-12 11:14:45,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 182 transitions, 1940 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-05-12 11:14:45,908 INFO L231 Difference]: Finished difference. Result has 154 places, 147 transitions, 1534 flow [2024-05-12 11:14:45,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1534, PETRI_PLACES=154, PETRI_TRANSITIONS=147} [2024-05-12 11:14:45,909 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 112 predicate places. [2024-05-12 11:14:45,909 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 147 transitions, 1534 flow [2024-05-12 11:14:45,909 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) [2024-05-12 11:14:45,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:14:45,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:14:45,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 11:14:45,910 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:14:45,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:14:45,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1271410356, now seen corresponding path program 8 times [2024-05-12 11:14:45,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:14:45,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78143871] [2024-05-12 11:14:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:14:45,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:14:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:14:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:14:51,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:14:51,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78143871] [2024-05-12 11:14:51,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78143871] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:14:51,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:14:51,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:14:51,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503977437] [2024-05-12 11:14:51,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:14:51,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:14:51,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:14:51,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:14:51,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:14:51,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:14:51,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 147 transitions, 1534 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) [2024-05-12 11:14:51,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:14:51,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:14:51,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:14:51,966 INFO L124 PetriNetUnfolderBase]: 1262/2275 cut-off events. [2024-05-12 11:14:51,966 INFO L125 PetriNetUnfolderBase]: For 35705/35705 co-relation queries the response was YES. [2024-05-12 11:14:51,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12117 conditions, 2275 events. 1262/2275 cut-off events. For 35705/35705 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13843 event pairs, 313 based on Foata normal form. 6/2218 useless extension candidates. Maximal degree in co-relation 12042. Up to 1849 conditions per place. [2024-05-12 11:14:51,982 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 155 selfloop transitions, 21 changer transitions 0/183 dead transitions. [2024-05-12 11:14:51,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 183 transitions, 2058 flow [2024-05-12 11:14:51,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:14:51,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:14:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-05-12 11:14:51,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-05-12 11:14:51,984 INFO L175 Difference]: Start difference. First operand has 154 places, 147 transitions, 1534 flow. Second operand 9 states and 156 transitions. [2024-05-12 11:14:51,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 183 transitions, 2058 flow [2024-05-12 11:14:52,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 183 transitions, 1996 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-05-12 11:14:52,048 INFO L231 Difference]: Finished difference. Result has 156 places, 151 transitions, 1599 flow [2024-05-12 11:14:52,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1472, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1599, PETRI_PLACES=156, PETRI_TRANSITIONS=151} [2024-05-12 11:14:52,048 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-05-12 11:14:52,048 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 151 transitions, 1599 flow [2024-05-12 11:14:52,049 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) [2024-05-12 11:14:52,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:14:52,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:14:52,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 11:14:52,049 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:14:52,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:14:52,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1271410573, now seen corresponding path program 4 times [2024-05-12 11:14:52,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:14:52,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765765578] [2024-05-12 11:14:52,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:14:52,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:14:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:14:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:14:58,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:14:58,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765765578] [2024-05-12 11:14:58,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765765578] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:14:58,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:14:58,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:14:58,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807200098] [2024-05-12 11:14:58,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:14:58,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:14:58,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:14:58,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:14:58,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:14:58,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:14:58,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 151 transitions, 1599 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) [2024-05-12 11:14:58,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:14:58,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:14:58,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:14:59,736 INFO L124 PetriNetUnfolderBase]: 1284/2325 cut-off events. [2024-05-12 11:14:59,736 INFO L125 PetriNetUnfolderBase]: For 35237/35237 co-relation queries the response was YES. [2024-05-12 11:14:59,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12340 conditions, 2325 events. 1284/2325 cut-off events. For 35237/35237 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14268 event pairs, 329 based on Foata normal form. 2/2260 useless extension candidates. Maximal degree in co-relation 12264. Up to 1939 conditions per place. [2024-05-12 11:14:59,754 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 159 selfloop transitions, 18 changer transitions 0/184 dead transitions. [2024-05-12 11:14:59,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 184 transitions, 2073 flow [2024-05-12 11:14:59,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:14:59,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:14:59,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-05-12 11:14:59,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2024-05-12 11:14:59,755 INFO L175 Difference]: Start difference. First operand has 156 places, 151 transitions, 1599 flow. Second operand 9 states and 154 transitions. [2024-05-12 11:14:59,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 184 transitions, 2073 flow [2024-05-12 11:14:59,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 184 transitions, 1999 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-05-12 11:14:59,823 INFO L231 Difference]: Finished difference. Result has 158 places, 153 transitions, 1598 flow [2024-05-12 11:14:59,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1598, PETRI_PLACES=158, PETRI_TRANSITIONS=153} [2024-05-12 11:14:59,824 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 116 predicate places. [2024-05-12 11:14:59,824 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 153 transitions, 1598 flow [2024-05-12 11:14:59,824 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) [2024-05-12 11:14:59,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:14:59,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:14:59,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 11:14:59,825 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:14:59,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:14:59,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1281508513, now seen corresponding path program 5 times [2024-05-12 11:14:59,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:14:59,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306806228] [2024-05-12 11:14:59,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:14:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:14:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:15:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:15:05,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:15:05,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306806228] [2024-05-12 11:15:05,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306806228] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:15:05,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:15:05,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:15:05,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49197256] [2024-05-12 11:15:05,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:15:05,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:15:05,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:15:05,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:15:05,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:15:05,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:15:05,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 153 transitions, 1598 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) [2024-05-12 11:15:05,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:15:05,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:15:05,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:15:06,574 INFO L124 PetriNetUnfolderBase]: 1286/2317 cut-off events. [2024-05-12 11:15:06,574 INFO L125 PetriNetUnfolderBase]: For 34750/34750 co-relation queries the response was YES. [2024-05-12 11:15:06,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12166 conditions, 2317 events. 1286/2317 cut-off events. For 34750/34750 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14163 event pairs, 336 based on Foata normal form. 2/2255 useless extension candidates. Maximal degree in co-relation 12089. Up to 1969 conditions per place. [2024-05-12 11:15:06,589 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 158 selfloop transitions, 18 changer transitions 0/183 dead transitions. [2024-05-12 11:15:06,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 183 transitions, 2044 flow [2024-05-12 11:15:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:15:06,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:15:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-05-12 11:15:06,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415204678362573 [2024-05-12 11:15:06,590 INFO L175 Difference]: Start difference. First operand has 158 places, 153 transitions, 1598 flow. Second operand 9 states and 151 transitions. [2024-05-12 11:15:06,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 183 transitions, 2044 flow [2024-05-12 11:15:06,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 183 transitions, 1991 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-05-12 11:15:06,662 INFO L231 Difference]: Finished difference. Result has 160 places, 155 transitions, 1610 flow [2024-05-12 11:15:06,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1545, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1610, PETRI_PLACES=160, PETRI_TRANSITIONS=155} [2024-05-12 11:15:06,663 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-05-12 11:15:06,663 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 155 transitions, 1610 flow [2024-05-12 11:15:06,663 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) [2024-05-12 11:15:06,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:15:06,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:15:06,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 11:15:06,664 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:15:06,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:15:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash 987204433, now seen corresponding path program 6 times [2024-05-12 11:15:06,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:15:06,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572502851] [2024-05-12 11:15:06,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:15:06,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:15:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:15:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:15:12,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:15:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572502851] [2024-05-12 11:15:12,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572502851] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:15:12,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:15:12,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:15:12,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586399673] [2024-05-12 11:15:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:15:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:15:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:15:12,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:15:12,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:15:12,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:15:12,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 1610 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) [2024-05-12 11:15:12,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:15:12,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:15:12,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:15:13,082 INFO L124 PetriNetUnfolderBase]: 1308/2339 cut-off events. [2024-05-12 11:15:13,082 INFO L125 PetriNetUnfolderBase]: For 36032/36032 co-relation queries the response was YES. [2024-05-12 11:15:13,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12359 conditions, 2339 events. 1308/2339 cut-off events. For 36032/36032 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14269 event pairs, 318 based on Foata normal form. 2/2280 useless extension candidates. Maximal degree in co-relation 12281. Up to 1935 conditions per place. [2024-05-12 11:15:13,098 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 164 selfloop transitions, 21 changer transitions 0/192 dead transitions. [2024-05-12 11:15:13,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 192 transitions, 2124 flow [2024-05-12 11:15:13,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:15:13,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:15:13,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-05-12 11:15:13,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-05-12 11:15:13,100 INFO L175 Difference]: Start difference. First operand has 160 places, 155 transitions, 1610 flow. Second operand 9 states and 159 transitions. [2024-05-12 11:15:13,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 192 transitions, 2124 flow [2024-05-12 11:15:13,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 192 transitions, 2075 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 11:15:13,178 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 1644 flow [2024-05-12 11:15:13,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1644, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2024-05-12 11:15:13,179 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2024-05-12 11:15:13,179 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 1644 flow [2024-05-12 11:15:13,179 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) [2024-05-12 11:15:13,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:15:13,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:15:13,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 11:15:13,180 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:15:13,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:15:13,180 INFO L85 PathProgramCache]: Analyzing trace with hash 987002623, now seen corresponding path program 7 times [2024-05-12 11:15:13,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:15:13,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102984014] [2024-05-12 11:15:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:15:13,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:15:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:15:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:15:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:15:21,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102984014] [2024-05-12 11:15:21,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102984014] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:15:21,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:15:21,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:15:21,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063739685] [2024-05-12 11:15:21,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:15:21,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:15:21,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:15:21,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:15:21,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:15:21,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:15:21,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 1644 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) [2024-05-12 11:15:21,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:15:21,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:15:21,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:15:21,984 INFO L124 PetriNetUnfolderBase]: 1304/2390 cut-off events. [2024-05-12 11:15:21,985 INFO L125 PetriNetUnfolderBase]: For 36255/36255 co-relation queries the response was YES. [2024-05-12 11:15:21,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12381 conditions, 2390 events. 1304/2390 cut-off events. For 36255/36255 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 14929 event pairs, 301 based on Foata normal form. 2/2314 useless extension candidates. Maximal degree in co-relation 12302. Up to 1824 conditions per place. [2024-05-12 11:15:22,004 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 154 selfloop transitions, 29 changer transitions 0/190 dead transitions. [2024-05-12 11:15:22,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 190 transitions, 2114 flow [2024-05-12 11:15:22,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:15:22,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:15:22,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-05-12 11:15:22,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619883040935672 [2024-05-12 11:15:22,006 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 1644 flow. Second operand 9 states and 158 transitions. [2024-05-12 11:15:22,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 190 transitions, 2114 flow [2024-05-12 11:15:22,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 190 transitions, 2047 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-05-12 11:15:22,094 INFO L231 Difference]: Finished difference. Result has 164 places, 157 transitions, 1640 flow [2024-05-12 11:15:22,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1640, PETRI_PLACES=164, PETRI_TRANSITIONS=157} [2024-05-12 11:15:22,094 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-05-12 11:15:22,094 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 157 transitions, 1640 flow [2024-05-12 11:15:22,094 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) [2024-05-12 11:15:22,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:15:22,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:15:22,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 11:15:22,095 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:15:22,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:15:22,095 INFO L85 PathProgramCache]: Analyzing trace with hash -970433936, now seen corresponding path program 9 times [2024-05-12 11:15:22,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:15:22,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809596853] [2024-05-12 11:15:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:15:22,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:15:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:15:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:15:27,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:15:27,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809596853] [2024-05-12 11:15:27,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809596853] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:15:27,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:15:27,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:15:27,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549793779] [2024-05-12 11:15:27,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:15:27,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:15:27,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:15:27,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:15:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:15:27,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:15:27,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 157 transitions, 1640 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) [2024-05-12 11:15:27,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:15:27,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:15:27,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:15:28,285 INFO L124 PetriNetUnfolderBase]: 1339/2383 cut-off events. [2024-05-12 11:15:28,285 INFO L125 PetriNetUnfolderBase]: For 38789/38789 co-relation queries the response was YES. [2024-05-12 11:15:28,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12819 conditions, 2383 events. 1339/2383 cut-off events. For 38789/38789 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14507 event pairs, 271 based on Foata normal form. 2/2325 useless extension candidates. Maximal degree in co-relation 12739. Up to 1709 conditions per place. [2024-05-12 11:15:28,307 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 152 selfloop transitions, 40 changer transitions 0/199 dead transitions. [2024-05-12 11:15:28,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 199 transitions, 2423 flow [2024-05-12 11:15:28,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:15:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:15:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-05-12 11:15:28,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47953216374269003 [2024-05-12 11:15:28,309 INFO L175 Difference]: Start difference. First operand has 164 places, 157 transitions, 1640 flow. Second operand 9 states and 164 transitions. [2024-05-12 11:15:28,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 199 transitions, 2423 flow [2024-05-12 11:15:28,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 199 transitions, 2289 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-05-12 11:15:28,396 INFO L231 Difference]: Finished difference. Result has 164 places, 162 transitions, 1688 flow [2024-05-12 11:15:28,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1506, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1688, PETRI_PLACES=164, PETRI_TRANSITIONS=162} [2024-05-12 11:15:28,396 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 122 predicate places. [2024-05-12 11:15:28,397 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 162 transitions, 1688 flow [2024-05-12 11:15:28,397 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) [2024-05-12 11:15:28,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:15:28,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:15:28,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 11:15:28,397 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:15:28,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:15:28,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1331204242, now seen corresponding path program 10 times [2024-05-12 11:15:28,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:15:28,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188215513] [2024-05-12 11:15:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:15:28,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:15:28,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:15:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:15:33,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:15:33,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188215513] [2024-05-12 11:15:33,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188215513] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:15:33,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:15:33,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:15:33,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850993767] [2024-05-12 11:15:33,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:15:33,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:15:33,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:15:33,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:15:33,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:15:33,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:15:33,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 162 transitions, 1688 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) [2024-05-12 11:15:33,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:15:33,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:15:33,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:15:34,402 INFO L124 PetriNetUnfolderBase]: 1335/2377 cut-off events. [2024-05-12 11:15:34,402 INFO L125 PetriNetUnfolderBase]: For 38222/38222 co-relation queries the response was YES. [2024-05-12 11:15:34,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12444 conditions, 2377 events. 1335/2377 cut-off events. For 38222/38222 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14496 event pairs, 271 based on Foata normal form. 2/2319 useless extension candidates. Maximal degree in co-relation 12364. Up to 1706 conditions per place. [2024-05-12 11:15:34,419 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 149 selfloop transitions, 42 changer transitions 0/198 dead transitions. [2024-05-12 11:15:34,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 198 transitions, 2282 flow [2024-05-12 11:15:34,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:15:34,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:15:34,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-05-12 11:15:34,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-05-12 11:15:34,420 INFO L175 Difference]: Start difference. First operand has 164 places, 162 transitions, 1688 flow. Second operand 9 states and 163 transitions. [2024-05-12 11:15:34,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 198 transitions, 2282 flow [2024-05-12 11:15:34,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 198 transitions, 2089 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-05-12 11:15:34,502 INFO L231 Difference]: Finished difference. Result has 165 places, 162 transitions, 1585 flow [2024-05-12 11:15:34,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1585, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2024-05-12 11:15:34,502 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 123 predicate places. [2024-05-12 11:15:34,502 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 1585 flow [2024-05-12 11:15:34,503 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) [2024-05-12 11:15:34,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:15:34,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:15:34,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 11:15:34,503 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:15:34,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:15:34,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1002126473, now seen corresponding path program 1 times [2024-05-12 11:15:34,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:15:34,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081211916] [2024-05-12 11:15:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:15:34,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:15:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:15:34,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:15:34,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:15:34,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081211916] [2024-05-12 11:15:34,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081211916] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:15:34,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:15:34,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 11:15:34,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964649282] [2024-05-12 11:15:34,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:15:34,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 11:15:34,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:15:34,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 11:15:34,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 11:15:34,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-05-12 11:15:34,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 162 transitions, 1585 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:15:34,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:15:34,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-05-12 11:15:34,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:15:35,343 INFO L124 PetriNetUnfolderBase]: 2001/3501 cut-off events. [2024-05-12 11:15:35,344 INFO L125 PetriNetUnfolderBase]: For 30712/30722 co-relation queries the response was YES. [2024-05-12 11:15:35,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16473 conditions, 3501 events. 2001/3501 cut-off events. For 30712/30722 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 22381 event pairs, 526 based on Foata normal form. 6/3358 useless extension candidates. Maximal degree in co-relation 16394. Up to 1935 conditions per place. [2024-05-12 11:15:35,372 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 188 selfloop transitions, 13 changer transitions 160/413 dead transitions. [2024-05-12 11:15:35,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 413 transitions, 4769 flow [2024-05-12 11:15:35,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 11:15:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 11:15:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2024-05-12 11:15:35,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2024-05-12 11:15:35,374 INFO L175 Difference]: Start difference. First operand has 165 places, 162 transitions, 1585 flow. Second operand 8 states and 168 transitions. [2024-05-12 11:15:35,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 413 transitions, 4769 flow [2024-05-12 11:15:35,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 413 transitions, 4601 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-05-12 11:15:35,477 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 1612 flow [2024-05-12 11:15:35,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1612, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2024-05-12 11:15:35,478 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-05-12 11:15:35,478 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 1612 flow [2024-05-12 11:15:35,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:15:35,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:15:35,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:15:35,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 11:15:35,479 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:15:35,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:15:35,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1157775977, now seen corresponding path program 1 times [2024-05-12 11:15:35,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:15:35,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692738876] [2024-05-12 11:15:35,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:15:35,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:15:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:15:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:15:42,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:15:42,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692738876] [2024-05-12 11:15:42,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692738876] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:15:42,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:15:42,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:15:42,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641475038] [2024-05-12 11:15:42,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:15:42,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:15:42,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:15:42,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:15:42,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:15:42,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:15:42,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 1612 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:15:42,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:15:42,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:15:42,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:15:43,414 INFO L124 PetriNetUnfolderBase]: 1511/2819 cut-off events. [2024-05-12 11:15:43,414 INFO L125 PetriNetUnfolderBase]: For 43451/43464 co-relation queries the response was YES. [2024-05-12 11:15:43,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14539 conditions, 2819 events. 1511/2819 cut-off events. For 43451/43464 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18295 event pairs, 389 based on Foata normal form. 9/2798 useless extension candidates. Maximal degree in co-relation 14455. Up to 2253 conditions per place. [2024-05-12 11:15:43,437 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 205 selfloop transitions, 24 changer transitions 3/240 dead transitions. [2024-05-12 11:15:43,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 240 transitions, 2556 flow [2024-05-12 11:15:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 11:15:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 11:15:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-05-12 11:15:43,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-05-12 11:15:43,438 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 1612 flow. Second operand 12 states and 209 transitions. [2024-05-12 11:15:43,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 240 transitions, 2556 flow [2024-05-12 11:15:43,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 240 transitions, 2536 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-05-12 11:15:43,534 INFO L231 Difference]: Finished difference. Result has 185 places, 184 transitions, 1885 flow [2024-05-12 11:15:43,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1885, PETRI_PLACES=185, PETRI_TRANSITIONS=184} [2024-05-12 11:15:43,534 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-05-12 11:15:43,534 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 184 transitions, 1885 flow [2024-05-12 11:15:43,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:15:43,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:15:43,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:15:43,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 11:15:43,535 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:15:43,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:15:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1182054279, now seen corresponding path program 2 times [2024-05-12 11:15:43,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:15:43,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200240235] [2024-05-12 11:15:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:15:43,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:15:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:15:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:15:48,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:15:48,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200240235] [2024-05-12 11:15:48,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200240235] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:15:48,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:15:48,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:15:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924001679] [2024-05-12 11:15:48,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:15:48,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:15:48,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:15:48,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:15:48,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:15:49,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 11:15:49,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 184 transitions, 1885 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:15:49,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:15:49,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 11:15:49,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:15:49,878 INFO L124 PetriNetUnfolderBase]: 1375/2566 cut-off events. [2024-05-12 11:15:49,878 INFO L125 PetriNetUnfolderBase]: For 48339/48346 co-relation queries the response was YES. [2024-05-12 11:15:49,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14045 conditions, 2566 events. 1375/2566 cut-off events. For 48339/48346 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16629 event pairs, 259 based on Foata normal form. 7/2541 useless extension candidates. Maximal degree in co-relation 13953. Up to 1922 conditions per place. [2024-05-12 11:15:49,900 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 189 selfloop transitions, 35 changer transitions 0/234 dead transitions. [2024-05-12 11:15:49,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 234 transitions, 2673 flow [2024-05-12 11:15:49,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:15:49,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:15:49,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-05-12 11:15:49,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-05-12 11:15:49,902 INFO L175 Difference]: Start difference. First operand has 185 places, 184 transitions, 1885 flow. Second operand 11 states and 199 transitions. [2024-05-12 11:15:49,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 234 transitions, 2673 flow [2024-05-12 11:15:50,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 234 transitions, 2609 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 11:15:50,014 INFO L231 Difference]: Finished difference. Result has 193 places, 188 transitions, 1975 flow [2024-05-12 11:15:50,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1975, PETRI_PLACES=193, PETRI_TRANSITIONS=188} [2024-05-12 11:15:50,014 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 151 predicate places. [2024-05-12 11:15:50,015 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 188 transitions, 1975 flow [2024-05-12 11:15:50,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:15:50,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:15:50,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:15:50,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 11:15:50,015 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:15:50,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:15:50,016 INFO L85 PathProgramCache]: Analyzing trace with hash 667877707, now seen corresponding path program 3 times [2024-05-12 11:15:50,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:15:50,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219644306] [2024-05-12 11:15:50,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:15:50,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:15:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:15:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:15:56,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:15:56,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219644306] [2024-05-12 11:15:56,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219644306] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:15:56,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:15:56,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:15:56,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542138289] [2024-05-12 11:15:56,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:15:56,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:15:56,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:15:56,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:15:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:15:56,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:15:56,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 188 transitions, 1975 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:15:56,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:15:56,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:15:56,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:15:57,373 INFO L124 PetriNetUnfolderBase]: 1616/2919 cut-off events. [2024-05-12 11:15:57,373 INFO L125 PetriNetUnfolderBase]: For 53986/53993 co-relation queries the response was YES. [2024-05-12 11:15:57,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16224 conditions, 2919 events. 1616/2919 cut-off events. For 53986/53993 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 18395 event pairs, 316 based on Foata normal form. 9/2890 useless extension candidates. Maximal degree in co-relation 16130. Up to 2363 conditions per place. [2024-05-12 11:15:57,395 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 202 selfloop transitions, 36 changer transitions 0/246 dead transitions. [2024-05-12 11:15:57,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 246 transitions, 2757 flow [2024-05-12 11:15:57,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:15:57,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:15:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-05-12 11:15:57,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4665071770334928 [2024-05-12 11:15:57,397 INFO L175 Difference]: Start difference. First operand has 193 places, 188 transitions, 1975 flow. Second operand 11 states and 195 transitions. [2024-05-12 11:15:57,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 246 transitions, 2757 flow [2024-05-12 11:15:57,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 246 transitions, 2695 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-05-12 11:15:57,509 INFO L231 Difference]: Finished difference. Result has 199 places, 194 transitions, 2081 flow [2024-05-12 11:15:57,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2081, PETRI_PLACES=199, PETRI_TRANSITIONS=194} [2024-05-12 11:15:57,510 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2024-05-12 11:15:57,510 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 194 transitions, 2081 flow [2024-05-12 11:15:57,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:15:57,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:15:57,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:15:57,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 11:15:57,510 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:15:57,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:15:57,511 INFO L85 PathProgramCache]: Analyzing trace with hash 670674217, now seen corresponding path program 4 times [2024-05-12 11:15:57,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:15:57,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476570948] [2024-05-12 11:15:57,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:15:57,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:15:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:16:03,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:16:03,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:16:03,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476570948] [2024-05-12 11:16:03,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476570948] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:16:03,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:16:03,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:16:03,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761905627] [2024-05-12 11:16:03,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:16:03,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:16:03,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:16:03,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:16:03,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:16:03,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:16:03,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 194 transitions, 2081 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:16:03,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:16:03,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:16:03,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:16:04,612 INFO L124 PetriNetUnfolderBase]: 1610/2909 cut-off events. [2024-05-12 11:16:04,613 INFO L125 PetriNetUnfolderBase]: For 48686/48693 co-relation queries the response was YES. [2024-05-12 11:16:04,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15953 conditions, 2909 events. 1610/2909 cut-off events. For 48686/48693 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18359 event pairs, 314 based on Foata normal form. 9/2880 useless extension candidates. Maximal degree in co-relation 15858. Up to 2405 conditions per place. [2024-05-12 11:16:04,639 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 201 selfloop transitions, 29 changer transitions 0/238 dead transitions. [2024-05-12 11:16:04,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 238 transitions, 2727 flow [2024-05-12 11:16:04,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:16:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:16:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-05-12 11:16:04,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 11:16:04,640 INFO L175 Difference]: Start difference. First operand has 199 places, 194 transitions, 2081 flow. Second operand 10 states and 175 transitions. [2024-05-12 11:16:04,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 238 transitions, 2727 flow [2024-05-12 11:16:04,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 238 transitions, 2643 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 11:16:04,823 INFO L231 Difference]: Finished difference. Result has 201 places, 194 transitions, 2061 flow [2024-05-12 11:16:04,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2061, PETRI_PLACES=201, PETRI_TRANSITIONS=194} [2024-05-12 11:16:04,824 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2024-05-12 11:16:04,824 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 194 transitions, 2061 flow [2024-05-12 11:16:04,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:16:04,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:16:04,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:16:04,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 11:16:04,824 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:16:04,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:16:04,825 INFO L85 PathProgramCache]: Analyzing trace with hash 780907051, now seen corresponding path program 1 times [2024-05-12 11:16:04,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:16:04,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711193193] [2024-05-12 11:16:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:16:04,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:16:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:16:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:16:11,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:16:11,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711193193] [2024-05-12 11:16:11,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711193193] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:16:11,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:16:11,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:16:11,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574761081] [2024-05-12 11:16:11,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:16:11,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:16:11,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:16:11,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:16:11,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:16:11,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2024-05-12 11:16:11,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 194 transitions, 2061 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 11:16:11,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:16:11,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2024-05-12 11:16:11,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:16:13,107 INFO L124 PetriNetUnfolderBase]: 1894/3460 cut-off events. [2024-05-12 11:16:13,107 INFO L125 PetriNetUnfolderBase]: For 54904/54904 co-relation queries the response was YES. [2024-05-12 11:16:13,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18235 conditions, 3460 events. 1894/3460 cut-off events. For 54904/54904 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 22531 event pairs, 470 based on Foata normal form. 4/3462 useless extension candidates. Maximal degree in co-relation 18139. Up to 2748 conditions per place. [2024-05-12 11:16:13,134 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 222 selfloop transitions, 43 changer transitions 4/275 dead transitions. [2024-05-12 11:16:13,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 275 transitions, 3331 flow [2024-05-12 11:16:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:16:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:16:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-05-12 11:16:13,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-05-12 11:16:13,141 INFO L175 Difference]: Start difference. First operand has 201 places, 194 transitions, 2061 flow. Second operand 10 states and 175 transitions. [2024-05-12 11:16:13,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 275 transitions, 3331 flow [2024-05-12 11:16:13,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 275 transitions, 3207 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-05-12 11:16:13,258 INFO L231 Difference]: Finished difference. Result has 206 places, 225 transitions, 2515 flow [2024-05-12 11:16:13,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2515, PETRI_PLACES=206, PETRI_TRANSITIONS=225} [2024-05-12 11:16:13,258 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 164 predicate places. [2024-05-12 11:16:13,259 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 225 transitions, 2515 flow [2024-05-12 11:16:13,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-05-12 11:16:13,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:16:13,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:16:13,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 11:16:13,259 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:16:13,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:16:13,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1300386859, now seen corresponding path program 2 times [2024-05-12 11:16:13,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:16:13,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133904623] [2024-05-12 11:16:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:16:13,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:16:13,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:16:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:16:19,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:16:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133904623] [2024-05-12 11:16:19,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133904623] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:16:19,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:16:19,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:16:19,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744202185] [2024-05-12 11:16:19,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:16:19,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:16:19,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:16:19,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:16:19,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:16:19,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:16:19,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 225 transitions, 2515 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:16:19,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:16:19,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:16:19,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:16:20,359 INFO L124 PetriNetUnfolderBase]: 1865/3284 cut-off events. [2024-05-12 11:16:20,360 INFO L125 PetriNetUnfolderBase]: For 66706/66777 co-relation queries the response was YES. [2024-05-12 11:16:20,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18853 conditions, 3284 events. 1865/3284 cut-off events. For 66706/66777 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 20849 event pairs, 257 based on Foata normal form. 36/3245 useless extension candidates. Maximal degree in co-relation 18752. Up to 1372 conditions per place. [2024-05-12 11:16:20,393 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 163 selfloop transitions, 109 changer transitions 0/284 dead transitions. [2024-05-12 11:16:20,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 284 transitions, 3667 flow [2024-05-12 11:16:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:16:20,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:16:20,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2024-05-12 11:16:20,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210526315789473 [2024-05-12 11:16:20,395 INFO L175 Difference]: Start difference. First operand has 206 places, 225 transitions, 2515 flow. Second operand 10 states and 198 transitions. [2024-05-12 11:16:20,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 284 transitions, 3667 flow [2024-05-12 11:16:20,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 284 transitions, 3604 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-05-12 11:16:20,581 INFO L231 Difference]: Finished difference. Result has 213 places, 234 transitions, 2826 flow [2024-05-12 11:16:20,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2826, PETRI_PLACES=213, PETRI_TRANSITIONS=234} [2024-05-12 11:16:20,581 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-05-12 11:16:20,581 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 234 transitions, 2826 flow [2024-05-12 11:16:20,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:16:20,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:16:20,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:16:20,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 11:16:20,582 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:16:20,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:16:20,582 INFO L85 PathProgramCache]: Analyzing trace with hash 786143327, now seen corresponding path program 3 times [2024-05-12 11:16:20,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:16:20,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917059760] [2024-05-12 11:16:20,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:16:20,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:16:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:16:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:16:27,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:16:27,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917059760] [2024-05-12 11:16:27,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917059760] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:16:27,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:16:27,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:16:27,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758125857] [2024-05-12 11:16:27,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:16:27,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:16:27,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:16:27,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:16:27,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:16:27,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 11:16:27,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 234 transitions, 2826 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:16:27,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:16:27,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 11:16:27,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:16:28,654 INFO L124 PetriNetUnfolderBase]: 1741/3123 cut-off events. [2024-05-12 11:16:28,655 INFO L125 PetriNetUnfolderBase]: For 75748/75822 co-relation queries the response was YES. [2024-05-12 11:16:28,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18937 conditions, 3123 events. 1741/3123 cut-off events. For 75748/75822 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20528 event pairs, 267 based on Foata normal form. 39/3077 useless extension candidates. Maximal degree in co-relation 18833. Up to 1320 conditions per place. [2024-05-12 11:16:28,687 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 163 selfloop transitions, 105 changer transitions 0/282 dead transitions. [2024-05-12 11:16:28,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 282 transitions, 3909 flow [2024-05-12 11:16:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:16:28,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:16:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 201 transitions. [2024-05-12 11:16:28,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5289473684210526 [2024-05-12 11:16:28,689 INFO L175 Difference]: Start difference. First operand has 213 places, 234 transitions, 2826 flow. Second operand 10 states and 201 transitions. [2024-05-12 11:16:28,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 282 transitions, 3909 flow [2024-05-12 11:16:28,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 282 transitions, 3787 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-05-12 11:16:28,891 INFO L231 Difference]: Finished difference. Result has 219 places, 239 transitions, 3006 flow [2024-05-12 11:16:28,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2724, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3006, PETRI_PLACES=219, PETRI_TRANSITIONS=239} [2024-05-12 11:16:28,892 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-05-12 11:16:28,892 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 239 transitions, 3006 flow [2024-05-12 11:16:28,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:16:28,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:16:28,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:16:28,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 11:16:28,892 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:16:28,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:16:28,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1171525957, now seen corresponding path program 5 times [2024-05-12 11:16:28,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:16:28,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955861964] [2024-05-12 11:16:28,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:16:28,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:16:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:16:34,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:16:34,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:16:34,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955861964] [2024-05-12 11:16:34,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955861964] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:16:34,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:16:34,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:16:34,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259150169] [2024-05-12 11:16:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:16:34,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:16:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:16:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:16:34,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:16:34,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:16:34,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 239 transitions, 3006 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:16:34,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:16:34,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:16:34,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:16:35,980 INFO L124 PetriNetUnfolderBase]: 1964/3387 cut-off events. [2024-05-12 11:16:35,980 INFO L125 PetriNetUnfolderBase]: For 77548/77605 co-relation queries the response was YES. [2024-05-12 11:16:36,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21026 conditions, 3387 events. 1964/3387 cut-off events. For 77548/77605 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 21258 event pairs, 338 based on Foata normal form. 39/3338 useless extension candidates. Maximal degree in co-relation 20920. Up to 2831 conditions per place. [2024-05-12 11:16:36,013 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 228 selfloop transitions, 43 changer transitions 0/283 dead transitions. [2024-05-12 11:16:36,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 283 transitions, 3764 flow [2024-05-12 11:16:36,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:16:36,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:16:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-05-12 11:16:36,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-05-12 11:16:36,014 INFO L175 Difference]: Start difference. First operand has 219 places, 239 transitions, 3006 flow. Second operand 10 states and 177 transitions. [2024-05-12 11:16:36,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 283 transitions, 3764 flow [2024-05-12 11:16:36,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 283 transitions, 3579 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 11:16:36,233 INFO L231 Difference]: Finished difference. Result has 224 places, 242 transitions, 2978 flow [2024-05-12 11:16:36,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2821, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2978, PETRI_PLACES=224, PETRI_TRANSITIONS=242} [2024-05-12 11:16:36,233 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2024-05-12 11:16:36,233 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 242 transitions, 2978 flow [2024-05-12 11:16:36,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:16:36,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:16:36,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:16:36,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 11:16:36,234 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:16:36,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:16:36,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1171703711, now seen corresponding path program 1 times [2024-05-12 11:16:36,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:16:36,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359232982] [2024-05-12 11:16:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:16:36,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:16:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:16:42,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:16:42,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:16:42,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359232982] [2024-05-12 11:16:42,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359232982] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:16:42,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:16:42,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:16:42,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571862673] [2024-05-12 11:16:42,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:16:42,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:16:42,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:16:42,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:16:42,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:16:42,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:16:42,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 242 transitions, 2978 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:16:42,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:16:42,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:16:42,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:16:43,812 INFO L124 PetriNetUnfolderBase]: 1960/3415 cut-off events. [2024-05-12 11:16:43,812 INFO L125 PetriNetUnfolderBase]: For 76301/76376 co-relation queries the response was YES. [2024-05-12 11:16:43,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20670 conditions, 3415 events. 1960/3415 cut-off events. For 76301/76376 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 21748 event pairs, 257 based on Foata normal form. 53/3385 useless extension candidates. Maximal degree in co-relation 20562. Up to 2392 conditions per place. [2024-05-12 11:16:43,848 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 199 selfloop transitions, 74 changer transitions 0/285 dead transitions. [2024-05-12 11:16:43,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 285 transitions, 3706 flow [2024-05-12 11:16:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:16:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:16:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-05-12 11:16:43,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-05-12 11:16:43,849 INFO L175 Difference]: Start difference. First operand has 224 places, 242 transitions, 2978 flow. Second operand 10 states and 186 transitions. [2024-05-12 11:16:43,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 285 transitions, 3706 flow [2024-05-12 11:16:44,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 285 transitions, 3569 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-05-12 11:16:44,072 INFO L231 Difference]: Finished difference. Result has 225 places, 242 transitions, 2994 flow [2024-05-12 11:16:44,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2994, PETRI_PLACES=225, PETRI_TRANSITIONS=242} [2024-05-12 11:16:44,073 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 183 predicate places. [2024-05-12 11:16:44,073 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 242 transitions, 2994 flow [2024-05-12 11:16:44,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:16:44,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:16:44,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:16:44,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 11:16:44,074 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:16:44,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:16:44,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1171530917, now seen corresponding path program 4 times [2024-05-12 11:16:44,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:16:44,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215974935] [2024-05-12 11:16:44,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:16:44,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:16:44,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:16:51,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:16:51,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:16:51,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215974935] [2024-05-12 11:16:51,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215974935] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:16:51,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:16:51,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:16:51,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067699879] [2024-05-12 11:16:51,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:16:51,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:16:51,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:16:51,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:16:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:16:51,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:16:51,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 242 transitions, 2994 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:16:51,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:16:51,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:16:51,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:16:52,259 INFO L124 PetriNetUnfolderBase]: 1958/3428 cut-off events. [2024-05-12 11:16:52,259 INFO L125 PetriNetUnfolderBase]: For 77193/77268 co-relation queries the response was YES. [2024-05-12 11:16:52,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20586 conditions, 3428 events. 1958/3428 cut-off events. For 77193/77268 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21860 event pairs, 257 based on Foata normal form. 41/3383 useless extension candidates. Maximal degree in co-relation 20479. Up to 1458 conditions per place. [2024-05-12 11:16:52,292 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 191 selfloop transitions, 97 changer transitions 0/300 dead transitions. [2024-05-12 11:16:52,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 300 transitions, 4262 flow [2024-05-12 11:16:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:16:52,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:16:52,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2024-05-12 11:16:52,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342105263157895 [2024-05-12 11:16:52,294 INFO L175 Difference]: Start difference. First operand has 225 places, 242 transitions, 2994 flow. Second operand 10 states and 203 transitions. [2024-05-12 11:16:52,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 300 transitions, 4262 flow [2024-05-12 11:16:52,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 300 transitions, 4081 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-05-12 11:16:52,531 INFO L231 Difference]: Finished difference. Result has 226 places, 247 transitions, 3087 flow [2024-05-12 11:16:52,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2827, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3087, PETRI_PLACES=226, PETRI_TRANSITIONS=247} [2024-05-12 11:16:52,531 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 184 predicate places. [2024-05-12 11:16:52,531 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 247 transitions, 3087 flow [2024-05-12 11:16:52,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:16:52,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:16:52,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:16:52,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 11:16:52,532 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:16:52,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:16:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1343845219, now seen corresponding path program 1 times [2024-05-12 11:16:52,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:16:52,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505217858] [2024-05-12 11:16:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:16:52,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:16:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:16:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:16:58,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:16:58,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505217858] [2024-05-12 11:16:58,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505217858] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:16:58,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:16:58,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:16:58,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561992979] [2024-05-12 11:16:58,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:16:58,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:16:58,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:16:58,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:16:58,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:16:58,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:16:58,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 247 transitions, 3087 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:16:58,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:16:58,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:16:58,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:17:00,059 INFO L124 PetriNetUnfolderBase]: 1997/3569 cut-off events. [2024-05-12 11:17:00,060 INFO L125 PetriNetUnfolderBase]: For 78378/78479 co-relation queries the response was YES. [2024-05-12 11:17:00,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21244 conditions, 3569 events. 1997/3569 cut-off events. For 78378/78479 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 23447 event pairs, 344 based on Foata normal form. 36/3526 useless extension candidates. Maximal degree in co-relation 21136. Up to 2929 conditions per place. [2024-05-12 11:17:00,093 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 247 selfloop transitions, 31 changer transitions 0/290 dead transitions. [2024-05-12 11:17:00,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 290 transitions, 3850 flow [2024-05-12 11:17:00,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:17:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:17:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-05-12 11:17:00,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-05-12 11:17:00,095 INFO L175 Difference]: Start difference. First operand has 226 places, 247 transitions, 3087 flow. Second operand 9 states and 161 transitions. [2024-05-12 11:17:00,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 290 transitions, 3850 flow [2024-05-12 11:17:00,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 290 transitions, 3691 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 11:17:00,327 INFO L231 Difference]: Finished difference. Result has 232 places, 255 transitions, 3099 flow [2024-05-12 11:17:00,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2930, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3099, PETRI_PLACES=232, PETRI_TRANSITIONS=255} [2024-05-12 11:17:00,328 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 190 predicate places. [2024-05-12 11:17:00,328 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 255 transitions, 3099 flow [2024-05-12 11:17:00,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:17:00,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:17:00,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:17:00,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 11:17:00,329 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:17:00,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:17:00,329 INFO L85 PathProgramCache]: Analyzing trace with hash 958038385, now seen corresponding path program 2 times [2024-05-12 11:17:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:17:00,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658495644] [2024-05-12 11:17:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:17:00,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:17:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:17:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:17:06,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:17:06,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658495644] [2024-05-12 11:17:06,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658495644] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:17:06,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:17:06,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:17:06,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318357369] [2024-05-12 11:17:06,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:17:06,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:17:06,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:17:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:17:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:17:07,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:17:07,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 255 transitions, 3099 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:17:07,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:17:07,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:17:07,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:17:08,216 INFO L124 PetriNetUnfolderBase]: 2011/3599 cut-off events. [2024-05-12 11:17:08,217 INFO L125 PetriNetUnfolderBase]: For 78457/78551 co-relation queries the response was YES. [2024-05-12 11:17:08,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21356 conditions, 3599 events. 2011/3599 cut-off events. For 78457/78551 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 23634 event pairs, 338 based on Foata normal form. 33/3562 useless extension candidates. Maximal degree in co-relation 21244. Up to 2889 conditions per place. [2024-05-12 11:17:08,255 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 248 selfloop transitions, 33 changer transitions 0/293 dead transitions. [2024-05-12 11:17:08,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 293 transitions, 3845 flow [2024-05-12 11:17:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:17:08,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:17:08,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-05-12 11:17:08,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-05-12 11:17:08,256 INFO L175 Difference]: Start difference. First operand has 232 places, 255 transitions, 3099 flow. Second operand 9 states and 166 transitions. [2024-05-12 11:17:08,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 293 transitions, 3845 flow [2024-05-12 11:17:08,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 293 transitions, 3806 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 11:17:08,495 INFO L231 Difference]: Finished difference. Result has 237 places, 257 transitions, 3166 flow [2024-05-12 11:17:08,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3166, PETRI_PLACES=237, PETRI_TRANSITIONS=257} [2024-05-12 11:17:08,495 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 195 predicate places. [2024-05-12 11:17:08,496 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 257 transitions, 3166 flow [2024-05-12 11:17:08,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:17:08,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:17:08,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:17:08,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 11:17:08,496 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:17:08,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:17:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1472275593, now seen corresponding path program 5 times [2024-05-12 11:17:08,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:17:08,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708818145] [2024-05-12 11:17:08,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:17:08,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:17:08,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:17:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:17:15,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:17:15,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708818145] [2024-05-12 11:17:15,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708818145] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:17:15,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:17:15,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:17:15,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812174832] [2024-05-12 11:17:15,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:17:15,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:17:15,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:17:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:17:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:17:15,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:17:15,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 257 transitions, 3166 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:17:15,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:17:15,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:17:15,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:17:16,672 INFO L124 PetriNetUnfolderBase]: 2115/3722 cut-off events. [2024-05-12 11:17:16,672 INFO L125 PetriNetUnfolderBase]: For 89805/89903 co-relation queries the response was YES. [2024-05-12 11:17:16,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22557 conditions, 3722 events. 2115/3722 cut-off events. For 89805/89903 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24215 event pairs, 355 based on Foata normal form. 36/3675 useless extension candidates. Maximal degree in co-relation 22443. Up to 2903 conditions per place. [2024-05-12 11:17:16,710 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 255 selfloop transitions, 39 changer transitions 0/306 dead transitions. [2024-05-12 11:17:16,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 306 transitions, 4136 flow [2024-05-12 11:17:16,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:17:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:17:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-05-12 11:17:16,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-05-12 11:17:16,712 INFO L175 Difference]: Start difference. First operand has 237 places, 257 transitions, 3166 flow. Second operand 10 states and 185 transitions. [2024-05-12 11:17:16,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 306 transitions, 4136 flow [2024-05-12 11:17:16,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 306 transitions, 4060 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-05-12 11:17:16,969 INFO L231 Difference]: Finished difference. Result has 240 places, 262 transitions, 3259 flow [2024-05-12 11:17:16,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3090, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3259, PETRI_PLACES=240, PETRI_TRANSITIONS=262} [2024-05-12 11:17:16,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 198 predicate places. [2024-05-12 11:17:16,970 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 262 transitions, 3259 flow [2024-05-12 11:17:16,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:17:16,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:17:16,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:17:16,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 11:17:16,970 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:17:16,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:17:16,971 INFO L85 PathProgramCache]: Analyzing trace with hash 951788971, now seen corresponding path program 6 times [2024-05-12 11:17:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:17:16,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554587507] [2024-05-12 11:17:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:17:16,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:17:17,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:17:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:17:23,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:17:23,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554587507] [2024-05-12 11:17:23,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554587507] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:17:23,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:17:23,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:17:23,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457096345] [2024-05-12 11:17:23,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:17:23,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:17:23,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:17:23,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:17:23,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:17:24,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:17:24,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 262 transitions, 3259 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:17:24,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:17:24,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:17:24,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:17:25,388 INFO L124 PetriNetUnfolderBase]: 2220/3924 cut-off events. [2024-05-12 11:17:25,389 INFO L125 PetriNetUnfolderBase]: For 100903/100984 co-relation queries the response was YES. [2024-05-12 11:17:25,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24191 conditions, 3924 events. 2220/3924 cut-off events. For 100903/100984 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 25884 event pairs, 352 based on Foata normal form. 38/3877 useless extension candidates. Maximal degree in co-relation 24076. Up to 2808 conditions per place. [2024-05-12 11:17:25,434 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 252 selfloop transitions, 53 changer transitions 0/317 dead transitions. [2024-05-12 11:17:25,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 317 transitions, 4529 flow [2024-05-12 11:17:25,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:17:25,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:17:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-05-12 11:17:25,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-05-12 11:17:25,435 INFO L175 Difference]: Start difference. First operand has 240 places, 262 transitions, 3259 flow. Second operand 10 states and 195 transitions. [2024-05-12 11:17:25,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 317 transitions, 4529 flow [2024-05-12 11:17:25,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 317 transitions, 4454 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-05-12 11:17:25,842 INFO L231 Difference]: Finished difference. Result has 245 places, 269 transitions, 3433 flow [2024-05-12 11:17:25,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3184, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3433, PETRI_PLACES=245, PETRI_TRANSITIONS=269} [2024-05-12 11:17:25,843 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-05-12 11:17:25,843 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 269 transitions, 3433 flow [2024-05-12 11:17:25,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:17:25,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:17:25,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:17:25,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 11:17:25,844 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:17:25,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:17:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash 8371213, now seen corresponding path program 7 times [2024-05-12 11:17:25,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:17:25,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768787935] [2024-05-12 11:17:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:17:25,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:17:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:17:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:17:34,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:17:34,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768787935] [2024-05-12 11:17:34,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768787935] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:17:34,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:17:34,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:17:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30486791] [2024-05-12 11:17:34,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:17:34,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:17:34,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:17:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:17:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:17:34,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:17:34,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 269 transitions, 3433 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:17:34,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:17:34,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:17:34,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:17:35,676 INFO L124 PetriNetUnfolderBase]: 2219/3916 cut-off events. [2024-05-12 11:17:35,676 INFO L125 PetriNetUnfolderBase]: For 101745/101857 co-relation queries the response was YES. [2024-05-12 11:17:35,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24486 conditions, 3916 events. 2219/3916 cut-off events. For 101745/101857 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 25774 event pairs, 378 based on Foata normal form. 37/3864 useless extension candidates. Maximal degree in co-relation 24368. Up to 3168 conditions per place. [2024-05-12 11:17:35,713 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 266 selfloop transitions, 36 changer transitions 0/314 dead transitions. [2024-05-12 11:17:35,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 314 transitions, 4266 flow [2024-05-12 11:17:35,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:17:35,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:17:35,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-05-12 11:17:35,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-05-12 11:17:35,715 INFO L175 Difference]: Start difference. First operand has 245 places, 269 transitions, 3433 flow. Second operand 10 states and 183 transitions. [2024-05-12 11:17:35,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 314 transitions, 4266 flow [2024-05-12 11:17:36,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 314 transitions, 4139 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-05-12 11:17:36,039 INFO L231 Difference]: Finished difference. Result has 250 places, 272 transitions, 3440 flow [2024-05-12 11:17:36,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3310, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3440, PETRI_PLACES=250, PETRI_TRANSITIONS=272} [2024-05-12 11:17:36,040 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-05-12 11:17:36,040 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 272 transitions, 3440 flow [2024-05-12 11:17:36,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:17:36,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:17:36,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:17:36,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 11:17:36,041 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:17:36,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:17:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1337342845, now seen corresponding path program 3 times [2024-05-12 11:17:36,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:17:36,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527296926] [2024-05-12 11:17:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:17:36,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:17:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:17:42,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:17:42,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:17:42,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527296926] [2024-05-12 11:17:42,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527296926] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:17:42,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:17:42,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:17:42,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097028919] [2024-05-12 11:17:42,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:17:42,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:17:42,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:17:42,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:17:42,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:17:42,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:17:42,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 272 transitions, 3440 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:17:42,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:17:42,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:17:42,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:17:43,815 INFO L124 PetriNetUnfolderBase]: 2217/3929 cut-off events. [2024-05-12 11:17:43,815 INFO L125 PetriNetUnfolderBase]: For 99886/100011 co-relation queries the response was YES. [2024-05-12 11:17:43,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24299 conditions, 3929 events. 2217/3929 cut-off events. For 99886/100011 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 25924 event pairs, 385 based on Foata normal form. 46/3890 useless extension candidates. Maximal degree in co-relation 24179. Up to 3172 conditions per place. [2024-05-12 11:17:43,855 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 261 selfloop transitions, 40 changer transitions 0/313 dead transitions. [2024-05-12 11:17:43,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 313 transitions, 4222 flow [2024-05-12 11:17:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:17:43,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:17:43,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-05-12 11:17:43,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-05-12 11:17:43,856 INFO L175 Difference]: Start difference. First operand has 250 places, 272 transitions, 3440 flow. Second operand 10 states and 184 transitions. [2024-05-12 11:17:43,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 313 transitions, 4222 flow [2024-05-12 11:17:44,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 313 transitions, 4127 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-05-12 11:17:44,212 INFO L231 Difference]: Finished difference. Result has 253 places, 272 transitions, 3430 flow [2024-05-12 11:17:44,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3345, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3430, PETRI_PLACES=253, PETRI_TRANSITIONS=272} [2024-05-12 11:17:44,212 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-05-12 11:17:44,213 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 272 transitions, 3430 flow [2024-05-12 11:17:44,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:17:44,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:17:44,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:17:44,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 11:17:44,213 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:17:44,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:17:44,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1337343031, now seen corresponding path program 8 times [2024-05-12 11:17:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:17:44,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643422123] [2024-05-12 11:17:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:17:44,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:17:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:17:52,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:17:52,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:17:52,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643422123] [2024-05-12 11:17:52,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643422123] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:17:52,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:17:52,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:17:52,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451988252] [2024-05-12 11:17:52,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:17:52,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:17:52,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:17:52,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:17:52,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:17:53,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:17:53,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 272 transitions, 3430 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:17:53,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:17:53,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:17:53,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:17:54,360 INFO L124 PetriNetUnfolderBase]: 2240/3966 cut-off events. [2024-05-12 11:17:54,360 INFO L125 PetriNetUnfolderBase]: For 104390/104483 co-relation queries the response was YES. [2024-05-12 11:17:54,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24448 conditions, 3966 events. 2240/3966 cut-off events. For 104390/104483 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 26252 event pairs, 353 based on Foata normal form. 42/3925 useless extension candidates. Maximal degree in co-relation 24327. Up to 3049 conditions per place. [2024-05-12 11:17:54,407 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 261 selfloop transitions, 47 changer transitions 0/320 dead transitions. [2024-05-12 11:17:54,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 320 transitions, 4401 flow [2024-05-12 11:17:54,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:17:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:17:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-05-12 11:17:54,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 11:17:54,409 INFO L175 Difference]: Start difference. First operand has 253 places, 272 transitions, 3430 flow. Second operand 10 states and 190 transitions. [2024-05-12 11:17:54,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 320 transitions, 4401 flow [2024-05-12 11:17:54,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 320 transitions, 4304 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-05-12 11:17:54,774 INFO L231 Difference]: Finished difference. Result has 254 places, 275 transitions, 3479 flow [2024-05-12 11:17:54,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3479, PETRI_PLACES=254, PETRI_TRANSITIONS=275} [2024-05-12 11:17:54,775 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 212 predicate places. [2024-05-12 11:17:54,775 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 275 transitions, 3479 flow [2024-05-12 11:17:54,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:17:54,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:17:54,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:17:54,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 11:17:54,775 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:17:54,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:17:54,775 INFO L85 PathProgramCache]: Analyzing trace with hash 951609481, now seen corresponding path program 9 times [2024-05-12 11:17:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:17:54,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430057612] [2024-05-12 11:17:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:17:54,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:17:54,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:18:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:18:01,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:18:01,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430057612] [2024-05-12 11:18:01,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430057612] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:18:01,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:18:01,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:18:01,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576516164] [2024-05-12 11:18:01,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:18:01,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:18:01,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:18:01,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:18:01,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:18:01,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-05-12 11:18:01,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 275 transitions, 3479 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:18:01,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:18:01,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-05-12 11:18:01,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:18:02,621 INFO L124 PetriNetUnfolderBase]: 1987/3555 cut-off events. [2024-05-12 11:18:02,621 INFO L125 PetriNetUnfolderBase]: For 101366/101484 co-relation queries the response was YES. [2024-05-12 11:18:02,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22196 conditions, 3555 events. 1987/3555 cut-off events. For 101366/101484 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 23825 event pairs, 340 based on Foata normal form. 49/3516 useless extension candidates. Maximal degree in co-relation 22074. Up to 2755 conditions per place. [2024-05-12 11:18:02,655 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 248 selfloop transitions, 49 changer transitions 0/311 dead transitions. [2024-05-12 11:18:02,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 311 transitions, 4233 flow [2024-05-12 11:18:02,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:18:02,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:18:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-05-12 11:18:02,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-05-12 11:18:02,656 INFO L175 Difference]: Start difference. First operand has 254 places, 275 transitions, 3479 flow. Second operand 10 states and 188 transitions. [2024-05-12 11:18:02,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 311 transitions, 4233 flow [2024-05-12 11:18:02,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 311 transitions, 4156 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-05-12 11:18:02,989 INFO L231 Difference]: Finished difference. Result has 258 places, 275 transitions, 3505 flow [2024-05-12 11:18:02,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3505, PETRI_PLACES=258, PETRI_TRANSITIONS=275} [2024-05-12 11:18:02,990 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 216 predicate places. [2024-05-12 11:18:02,990 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 275 transitions, 3505 flow [2024-05-12 11:18:02,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:18:02,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:18:02,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:18:02,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 11:18:02,991 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:18:02,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:18:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash 951604521, now seen corresponding path program 6 times [2024-05-12 11:18:02,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:18:02,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289591998] [2024-05-12 11:18:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:18:02,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:18:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:18:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:18:09,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:18:09,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289591998] [2024-05-12 11:18:09,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289591998] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:18:09,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:18:09,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:18:09,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062715354] [2024-05-12 11:18:09,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:18:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:18:09,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:18:09,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:18:09,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:18:09,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:18:09,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 275 transitions, 3505 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:09,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:18:09,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:18:09,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:18:10,957 INFO L124 PetriNetUnfolderBase]: 2256/3920 cut-off events. [2024-05-12 11:18:10,957 INFO L125 PetriNetUnfolderBase]: For 106505/106600 co-relation queries the response was YES. [2024-05-12 11:18:10,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24753 conditions, 3920 events. 2256/3920 cut-off events. For 106505/106600 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 25419 event pairs, 482 based on Foata normal form. 32/3842 useless extension candidates. Maximal degree in co-relation 24629. Up to 3424 conditions per place. [2024-05-12 11:18:11,005 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 277 selfloop transitions, 24 changer transitions 0/313 dead transitions. [2024-05-12 11:18:11,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 313 transitions, 4289 flow [2024-05-12 11:18:11,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:18:11,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:18:11,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-05-12 11:18:11,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 11:18:11,006 INFO L175 Difference]: Start difference. First operand has 258 places, 275 transitions, 3505 flow. Second operand 10 states and 170 transitions. [2024-05-12 11:18:11,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 313 transitions, 4289 flow [2024-05-12 11:18:11,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 313 transitions, 4199 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-05-12 11:18:11,377 INFO L231 Difference]: Finished difference. Result has 260 places, 276 transitions, 3489 flow [2024-05-12 11:18:11,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3489, PETRI_PLACES=260, PETRI_TRANSITIONS=276} [2024-05-12 11:18:11,377 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 218 predicate places. [2024-05-12 11:18:11,378 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 276 transitions, 3489 flow [2024-05-12 11:18:11,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:11,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:18:11,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:18:11,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 11:18:11,378 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:18:11,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:18:11,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1060701749, now seen corresponding path program 7 times [2024-05-12 11:18:11,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:18:11,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502670886] [2024-05-12 11:18:11,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:18:11,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:18:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:18:17,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:18:17,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:18:17,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502670886] [2024-05-12 11:18:17,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502670886] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:18:17,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:18:17,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:18:17,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904190275] [2024-05-12 11:18:17,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:18:17,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:18:17,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:18:17,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:18:17,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:18:17,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:18:17,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 276 transitions, 3489 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:17,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:18:17,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:18:17,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:18:18,384 INFO L124 PetriNetUnfolderBase]: 2258/3893 cut-off events. [2024-05-12 11:18:18,384 INFO L125 PetriNetUnfolderBase]: For 104835/104940 co-relation queries the response was YES. [2024-05-12 11:18:18,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24509 conditions, 3893 events. 2258/3893 cut-off events. For 104835/104940 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 25043 event pairs, 572 based on Foata normal form. 31/3789 useless extension candidates. Maximal degree in co-relation 24384. Up to 3459 conditions per place. [2024-05-12 11:18:18,437 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 282 selfloop transitions, 17 changer transitions 0/311 dead transitions. [2024-05-12 11:18:18,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 311 transitions, 4253 flow [2024-05-12 11:18:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:18:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:18:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-05-12 11:18:18,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-05-12 11:18:18,438 INFO L175 Difference]: Start difference. First operand has 260 places, 276 transitions, 3489 flow. Second operand 10 states and 165 transitions. [2024-05-12 11:18:18,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 311 transitions, 4253 flow [2024-05-12 11:18:18,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 311 transitions, 4173 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-05-12 11:18:18,840 INFO L231 Difference]: Finished difference. Result has 261 places, 277 transitions, 3471 flow [2024-05-12 11:18:18,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3409, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3471, PETRI_PLACES=261, PETRI_TRANSITIONS=277} [2024-05-12 11:18:18,841 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-05-12 11:18:18,841 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 277 transitions, 3471 flow [2024-05-12 11:18:18,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:18,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:18:18,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:18:18,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 11:18:18,841 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:18:18,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:18:18,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1083081143, now seen corresponding path program 2 times [2024-05-12 11:18:18,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:18:18,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801948569] [2024-05-12 11:18:18,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:18:18,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:18:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:18:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:18:23,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:18:23,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801948569] [2024-05-12 11:18:23,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801948569] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:18:23,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:18:23,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:18:23,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119155096] [2024-05-12 11:18:23,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:18:23,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:18:23,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:18:23,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:18:23,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:18:23,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:18:23,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 277 transitions, 3471 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:23,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:18:23,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:18:23,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:18:25,133 INFO L124 PetriNetUnfolderBase]: 2292/3961 cut-off events. [2024-05-12 11:18:25,134 INFO L125 PetriNetUnfolderBase]: For 107360/107471 co-relation queries the response was YES. [2024-05-12 11:18:25,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24742 conditions, 3961 events. 2292/3961 cut-off events. For 107360/107471 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 25603 event pairs, 585 based on Foata normal form. 33/3853 useless extension candidates. Maximal degree in co-relation 24617. Up to 3467 conditions per place. [2024-05-12 11:18:25,181 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 272 selfloop transitions, 26 changer transitions 0/310 dead transitions. [2024-05-12 11:18:25,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 310 transitions, 4225 flow [2024-05-12 11:18:25,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:18:25,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:18:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-05-12 11:18:25,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-05-12 11:18:25,182 INFO L175 Difference]: Start difference. First operand has 261 places, 277 transitions, 3471 flow. Second operand 9 states and 152 transitions. [2024-05-12 11:18:25,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 310 transitions, 4225 flow [2024-05-12 11:18:25,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 310 transitions, 4144 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-05-12 11:18:25,707 INFO L231 Difference]: Finished difference. Result has 262 places, 280 transitions, 3511 flow [2024-05-12 11:18:25,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3511, PETRI_PLACES=262, PETRI_TRANSITIONS=280} [2024-05-12 11:18:25,707 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 220 predicate places. [2024-05-12 11:18:25,707 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 280 transitions, 3511 flow [2024-05-12 11:18:25,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:25,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:18:25,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:18:25,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 11:18:25,708 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:18:25,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:18:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash 532481705, now seen corresponding path program 3 times [2024-05-12 11:18:25,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:18:25,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826805409] [2024-05-12 11:18:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:18:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:18:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:18:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:18:30,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:18:30,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826805409] [2024-05-12 11:18:30,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826805409] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:18:30,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:18:30,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:18:30,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715852863] [2024-05-12 11:18:30,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:18:30,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:18:30,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:18:30,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:18:30,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:18:30,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:18:30,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 280 transitions, 3511 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:30,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:18:30,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:18:30,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:18:32,160 INFO L124 PetriNetUnfolderBase]: 2312/3985 cut-off events. [2024-05-12 11:18:32,161 INFO L125 PetriNetUnfolderBase]: For 110672/110834 co-relation queries the response was YES. [2024-05-12 11:18:32,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24971 conditions, 3985 events. 2312/3985 cut-off events. For 110672/110834 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 25691 event pairs, 586 based on Foata normal form. 40/3881 useless extension candidates. Maximal degree in co-relation 24845. Up to 3546 conditions per place. [2024-05-12 11:18:32,203 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 277 selfloop transitions, 19 changer transitions 0/308 dead transitions. [2024-05-12 11:18:32,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 308 transitions, 4215 flow [2024-05-12 11:18:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:18:32,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:18:32,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-05-12 11:18:32,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2024-05-12 11:18:32,204 INFO L175 Difference]: Start difference. First operand has 262 places, 280 transitions, 3511 flow. Second operand 9 states and 148 transitions. [2024-05-12 11:18:32,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 308 transitions, 4215 flow [2024-05-12 11:18:32,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 308 transitions, 4163 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-05-12 11:18:32,619 INFO L231 Difference]: Finished difference. Result has 267 places, 283 transitions, 3544 flow [2024-05-12 11:18:32,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3544, PETRI_PLACES=267, PETRI_TRANSITIONS=283} [2024-05-12 11:18:32,619 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-05-12 11:18:32,620 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 283 transitions, 3544 flow [2024-05-12 11:18:32,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:32,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:18:32,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:18:32,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 11:18:32,620 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:18:32,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:18:32,621 INFO L85 PathProgramCache]: Analyzing trace with hash -12177623, now seen corresponding path program 4 times [2024-05-12 11:18:32,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:18:32,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752106019] [2024-05-12 11:18:32,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:18:32,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:18:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:18:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:18:38,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:18:38,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752106019] [2024-05-12 11:18:38,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752106019] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:18:38,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:18:38,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:18:38,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325095475] [2024-05-12 11:18:38,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:18:38,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:18:38,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:18:38,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:18:38,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:18:38,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:18:38,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 283 transitions, 3544 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:38,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:18:38,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:18:38,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:18:39,904 INFO L124 PetriNetUnfolderBase]: 2329/4008 cut-off events. [2024-05-12 11:18:39,904 INFO L125 PetriNetUnfolderBase]: For 114724/114868 co-relation queries the response was YES. [2024-05-12 11:18:39,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25389 conditions, 4008 events. 2329/4008 cut-off events. For 114724/114868 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 25899 event pairs, 564 based on Foata normal form. 35/3892 useless extension candidates. Maximal degree in co-relation 25260. Up to 3505 conditions per place. [2024-05-12 11:18:39,947 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 283 selfloop transitions, 23 changer transitions 0/318 dead transitions. [2024-05-12 11:18:39,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 318 transitions, 4343 flow [2024-05-12 11:18:39,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:18:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:18:39,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-05-12 11:18:39,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-05-12 11:18:39,948 INFO L175 Difference]: Start difference. First operand has 267 places, 283 transitions, 3544 flow. Second operand 9 states and 156 transitions. [2024-05-12 11:18:39,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 318 transitions, 4343 flow [2024-05-12 11:18:40,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 318 transitions, 4292 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-05-12 11:18:40,390 INFO L231 Difference]: Finished difference. Result has 271 places, 286 transitions, 3597 flow [2024-05-12 11:18:40,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3493, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3597, PETRI_PLACES=271, PETRI_TRANSITIONS=286} [2024-05-12 11:18:40,390 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 229 predicate places. [2024-05-12 11:18:40,390 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 286 transitions, 3597 flow [2024-05-12 11:18:40,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:40,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:18:40,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:18:40,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 11:18:40,391 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:18:40,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:18:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1688771681, now seen corresponding path program 10 times [2024-05-12 11:18:40,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:18:40,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397711115] [2024-05-12 11:18:40,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:18:40,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:18:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:18:47,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:18:47,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:18:47,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397711115] [2024-05-12 11:18:47,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397711115] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:18:47,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:18:47,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:18:47,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514698185] [2024-05-12 11:18:47,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:18:47,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:18:47,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:18:47,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:18:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:18:47,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:18:47,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 286 transitions, 3597 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:47,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:18:47,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:18:47,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:18:48,615 INFO L124 PetriNetUnfolderBase]: 2435/4171 cut-off events. [2024-05-12 11:18:48,615 INFO L125 PetriNetUnfolderBase]: For 132527/132682 co-relation queries the response was YES. [2024-05-12 11:18:48,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26894 conditions, 4171 events. 2435/4171 cut-off events. For 132527/132682 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 27001 event pairs, 561 based on Foata normal form. 43/4059 useless extension candidates. Maximal degree in co-relation 26763. Up to 3449 conditions per place. [2024-05-12 11:18:48,661 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 289 selfloop transitions, 31 changer transitions 0/332 dead transitions. [2024-05-12 11:18:48,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 332 transitions, 4657 flow [2024-05-12 11:18:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:18:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:18:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-05-12 11:18:48,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 11:18:48,662 INFO L175 Difference]: Start difference. First operand has 271 places, 286 transitions, 3597 flow. Second operand 10 states and 180 transitions. [2024-05-12 11:18:48,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 332 transitions, 4657 flow [2024-05-12 11:18:49,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 332 transitions, 4588 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-05-12 11:18:49,192 INFO L231 Difference]: Finished difference. Result has 275 places, 291 transitions, 3697 flow [2024-05-12 11:18:49,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3528, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3697, PETRI_PLACES=275, PETRI_TRANSITIONS=291} [2024-05-12 11:18:49,192 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 233 predicate places. [2024-05-12 11:18:49,192 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 291 transitions, 3697 flow [2024-05-12 11:18:49,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:18:49,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:18:49,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:18:49,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 11:18:49,193 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:18:49,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:18:49,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1688771495, now seen corresponding path program 4 times [2024-05-12 11:18:49,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:18:49,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950476039] [2024-05-12 11:18:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:18:49,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:18:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:18:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:18:55,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:18:55,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950476039] [2024-05-12 11:18:55,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950476039] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:18:55,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:18:55,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 11:18:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575400028] [2024-05-12 11:18:55,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:18:55,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 11:18:55,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:18:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 11:18:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 11:18:55,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:18:55,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 291 transitions, 3697 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:18:55,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:18:55,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:18:55,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:18:56,819 INFO L124 PetriNetUnfolderBase]: 2427/4167 cut-off events. [2024-05-12 11:18:56,819 INFO L125 PetriNetUnfolderBase]: For 127348/127507 co-relation queries the response was YES. [2024-05-12 11:18:56,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26827 conditions, 4167 events. 2427/4167 cut-off events. For 127348/127507 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 26992 event pairs, 589 based on Foata normal form. 44/4059 useless extension candidates. Maximal degree in co-relation 26696. Up to 3584 conditions per place. [2024-05-12 11:18:56,866 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 287 selfloop transitions, 25 changer transitions 0/324 dead transitions. [2024-05-12 11:18:56,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 324 transitions, 4467 flow [2024-05-12 11:18:56,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:18:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:18:56,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-05-12 11:18:56,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47076023391812866 [2024-05-12 11:18:56,868 INFO L175 Difference]: Start difference. First operand has 275 places, 291 transitions, 3697 flow. Second operand 9 states and 161 transitions. [2024-05-12 11:18:56,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 324 transitions, 4467 flow [2024-05-12 11:18:57,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 324 transitions, 4371 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-05-12 11:18:57,415 INFO L231 Difference]: Finished difference. Result has 278 places, 291 transitions, 3659 flow [2024-05-12 11:18:57,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3601, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3659, PETRI_PLACES=278, PETRI_TRANSITIONS=291} [2024-05-12 11:18:57,415 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 236 predicate places. [2024-05-12 11:18:57,416 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 291 transitions, 3659 flow [2024-05-12 11:18:57,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:18:57,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:18:57,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:18:57,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 11:18:57,416 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:18:57,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:18:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash 532304647, now seen corresponding path program 11 times [2024-05-12 11:18:57,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:18:57,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605440450] [2024-05-12 11:18:57,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:18:57,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:18:57,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:19:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:19:04,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:19:04,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605440450] [2024-05-12 11:19:04,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605440450] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:19:04,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:19:04,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:19:04,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139667771] [2024-05-12 11:19:04,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:19:04,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:19:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:19:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:19:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:19:04,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:19:04,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 291 transitions, 3659 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:04,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:19:04,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:19:04,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:19:05,756 INFO L124 PetriNetUnfolderBase]: 2504/4366 cut-off events. [2024-05-12 11:19:05,756 INFO L125 PetriNetUnfolderBase]: For 138335/138512 co-relation queries the response was YES. [2024-05-12 11:19:05,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27882 conditions, 4366 events. 2504/4366 cut-off events. For 138335/138512 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 28956 event pairs, 541 based on Foata normal form. 58/4281 useless extension candidates. Maximal degree in co-relation 27749. Up to 3374 conditions per place. [2024-05-12 11:19:05,811 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 289 selfloop transitions, 44 changer transitions 0/345 dead transitions. [2024-05-12 11:19:05,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 345 transitions, 5128 flow [2024-05-12 11:19:05,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:19:05,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:19:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-05-12 11:19:05,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-05-12 11:19:05,812 INFO L175 Difference]: Start difference. First operand has 278 places, 291 transitions, 3659 flow. Second operand 10 states and 183 transitions. [2024-05-12 11:19:05,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 345 transitions, 5128 flow [2024-05-12 11:19:06,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 345 transitions, 5036 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-05-12 11:19:06,359 INFO L231 Difference]: Finished difference. Result has 280 places, 303 transitions, 3907 flow [2024-05-12 11:19:06,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3567, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3907, PETRI_PLACES=280, PETRI_TRANSITIONS=303} [2024-05-12 11:19:06,360 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 238 predicate places. [2024-05-12 11:19:06,360 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 303 transitions, 3907 flow [2024-05-12 11:19:06,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:06,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:19:06,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:19:06,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 11:19:06,361 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:19:06,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:19:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash -12417191, now seen corresponding path program 12 times [2024-05-12 11:19:06,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:19:06,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672106570] [2024-05-12 11:19:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:19:06,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:19:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:19:13,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:19:13,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:19:13,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672106570] [2024-05-12 11:19:13,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672106570] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:19:13,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:19:13,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:19:13,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330033142] [2024-05-12 11:19:13,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:19:13,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:19:13,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:19:13,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:19:13,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:19:13,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:19:13,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 303 transitions, 3907 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:13,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:19:13,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:19:13,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:19:15,080 INFO L124 PetriNetUnfolderBase]: 2500/4254 cut-off events. [2024-05-12 11:19:15,080 INFO L125 PetriNetUnfolderBase]: For 136172/136330 co-relation queries the response was YES. [2024-05-12 11:19:15,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27877 conditions, 4254 events. 2500/4254 cut-off events. For 136172/136330 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 27424 event pairs, 583 based on Foata normal form. 43/4139 useless extension candidates. Maximal degree in co-relation 27742. Up to 3558 conditions per place. [2024-05-12 11:19:15,129 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 298 selfloop transitions, 34 changer transitions 0/344 dead transitions. [2024-05-12 11:19:15,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 344 transitions, 4908 flow [2024-05-12 11:19:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:19:15,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:19:15,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-05-12 11:19:15,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-05-12 11:19:15,130 INFO L175 Difference]: Start difference. First operand has 280 places, 303 transitions, 3907 flow. Second operand 10 states and 181 transitions. [2024-05-12 11:19:15,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 344 transitions, 4908 flow [2024-05-12 11:19:15,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 344 transitions, 4816 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-05-12 11:19:15,804 INFO L231 Difference]: Finished difference. Result has 286 places, 304 transitions, 3913 flow [2024-05-12 11:19:15,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3819, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3913, PETRI_PLACES=286, PETRI_TRANSITIONS=304} [2024-05-12 11:19:15,805 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 244 predicate places. [2024-05-12 11:19:15,805 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 304 transitions, 3913 flow [2024-05-12 11:19:15,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:15,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:19:15,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:19:15,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 11:19:15,805 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:19:15,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:19:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash 532311157, now seen corresponding path program 13 times [2024-05-12 11:19:15,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:19:15,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402273083] [2024-05-12 11:19:15,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:19:15,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:19:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:19:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:19:22,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:19:22,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402273083] [2024-05-12 11:19:22,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402273083] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:19:22,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:19:22,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:19:22,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376113009] [2024-05-12 11:19:22,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:19:22,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:19:22,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:19:22,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:19:22,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:19:22,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:19:22,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 304 transitions, 3913 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:22,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:19:22,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:19:22,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:19:24,488 INFO L124 PetriNetUnfolderBase]: 2598/4541 cut-off events. [2024-05-12 11:19:24,488 INFO L125 PetriNetUnfolderBase]: For 150278/150413 co-relation queries the response was YES. [2024-05-12 11:19:24,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29461 conditions, 4541 events. 2598/4541 cut-off events. For 150278/150413 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 30342 event pairs, 539 based on Foata normal form. 59/4444 useless extension candidates. Maximal degree in co-relation 29324. Up to 3092 conditions per place. [2024-05-12 11:19:24,542 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 278 selfloop transitions, 65 changer transitions 0/355 dead transitions. [2024-05-12 11:19:24,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 355 transitions, 5349 flow [2024-05-12 11:19:24,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:19:24,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:19:24,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-05-12 11:19:24,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-05-12 11:19:24,544 INFO L175 Difference]: Start difference. First operand has 286 places, 304 transitions, 3913 flow. Second operand 10 states and 187 transitions. [2024-05-12 11:19:24,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 355 transitions, 5349 flow [2024-05-12 11:19:25,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 355 transitions, 5249 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-05-12 11:19:25,277 INFO L231 Difference]: Finished difference. Result has 290 places, 311 transitions, 4113 flow [2024-05-12 11:19:25,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3813, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4113, PETRI_PLACES=290, PETRI_TRANSITIONS=311} [2024-05-12 11:19:25,278 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 248 predicate places. [2024-05-12 11:19:25,278 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 311 transitions, 4113 flow [2024-05-12 11:19:25,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:25,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:19:25,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:19:25,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 11:19:25,279 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:19:25,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:19:25,279 INFO L85 PathProgramCache]: Analyzing trace with hash 532131667, now seen corresponding path program 14 times [2024-05-12 11:19:25,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:19:25,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103293765] [2024-05-12 11:19:25,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:19:25,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:19:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:19:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:19:33,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:19:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103293765] [2024-05-12 11:19:33,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103293765] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:19:33,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:19:33,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:19:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902654353] [2024-05-12 11:19:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:19:33,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:19:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:19:33,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:19:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:19:33,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:19:33,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 311 transitions, 4113 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:33,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:19:33,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:19:33,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:19:35,209 INFO L124 PetriNetUnfolderBase]: 2594/4550 cut-off events. [2024-05-12 11:19:35,209 INFO L125 PetriNetUnfolderBase]: For 153563/153716 co-relation queries the response was YES. [2024-05-12 11:19:35,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29820 conditions, 4550 events. 2594/4550 cut-off events. For 153563/153716 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 30558 event pairs, 505 based on Foata normal form. 70/4473 useless extension candidates. Maximal degree in co-relation 29681. Up to 3431 conditions per place. [2024-05-12 11:19:35,266 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 284 selfloop transitions, 57 changer transitions 0/353 dead transitions. [2024-05-12 11:19:35,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 353 transitions, 5158 flow [2024-05-12 11:19:35,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:19:35,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:19:35,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-05-12 11:19:35,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-05-12 11:19:35,267 INFO L175 Difference]: Start difference. First operand has 290 places, 311 transitions, 4113 flow. Second operand 10 states and 179 transitions. [2024-05-12 11:19:35,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 353 transitions, 5158 flow [2024-05-12 11:19:35,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 353 transitions, 4986 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-05-12 11:19:35,811 INFO L231 Difference]: Finished difference. Result has 296 places, 314 transitions, 4161 flow [2024-05-12 11:19:35,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3946, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4161, PETRI_PLACES=296, PETRI_TRANSITIONS=314} [2024-05-12 11:19:35,811 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-05-12 11:19:35,811 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 314 transitions, 4161 flow [2024-05-12 11:19:35,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:35,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:19:35,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:19:35,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 11:19:35,812 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:19:35,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:19:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash 208278125, now seen corresponding path program 5 times [2024-05-12 11:19:35,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:19:35,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999274526] [2024-05-12 11:19:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:19:35,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:19:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:19:41,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:19:41,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:19:41,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999274526] [2024-05-12 11:19:41,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999274526] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:19:41,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:19:41,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:19:41,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276395389] [2024-05-12 11:19:41,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:19:41,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:19:41,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:19:41,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:19:41,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:19:41,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:19:41,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 314 transitions, 4161 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:41,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:19:41,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:19:41,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:19:42,780 INFO L124 PetriNetUnfolderBase]: 2605/4415 cut-off events. [2024-05-12 11:19:42,780 INFO L125 PetriNetUnfolderBase]: For 149123/149295 co-relation queries the response was YES. [2024-05-12 11:19:42,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29440 conditions, 4415 events. 2605/4415 cut-off events. For 149123/149295 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28516 event pairs, 672 based on Foata normal form. 42/4280 useless extension candidates. Maximal degree in co-relation 29299. Up to 3960 conditions per place. [2024-05-12 11:19:42,828 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 314 selfloop transitions, 20 changer transitions 0/346 dead transitions. [2024-05-12 11:19:42,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 346 transitions, 4998 flow [2024-05-12 11:19:42,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 11:19:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 11:19:42,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-05-12 11:19:42,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-05-12 11:19:42,829 INFO L175 Difference]: Start difference. First operand has 296 places, 314 transitions, 4161 flow. Second operand 9 states and 153 transitions. [2024-05-12 11:19:42,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 346 transitions, 4998 flow [2024-05-12 11:19:43,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 346 transitions, 4901 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-05-12 11:19:43,576 INFO L231 Difference]: Finished difference. Result has 299 places, 316 transitions, 4157 flow [2024-05-12 11:19:43,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4065, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4157, PETRI_PLACES=299, PETRI_TRANSITIONS=316} [2024-05-12 11:19:43,577 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-05-12 11:19:43,577 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 316 transitions, 4157 flow [2024-05-12 11:19:43,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:43,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:19:43,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:19:43,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 11:19:43,578 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:19:43,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:19:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash 759023015, now seen corresponding path program 15 times [2024-05-12 11:19:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:19:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842639841] [2024-05-12 11:19:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:19:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:19:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:19:48,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:19:48,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:19:48,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842639841] [2024-05-12 11:19:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842639841] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:19:48,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:19:48,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:19:48,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477835213] [2024-05-12 11:19:48,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:19:48,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:19:48,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:19:48,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:19:48,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:19:49,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:19:49,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 316 transitions, 4157 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:49,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:19:49,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:19:49,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:19:50,582 INFO L124 PetriNetUnfolderBase]: 2657/4485 cut-off events. [2024-05-12 11:19:50,582 INFO L125 PetriNetUnfolderBase]: For 159742/159948 co-relation queries the response was YES. [2024-05-12 11:19:50,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29987 conditions, 4485 events. 2657/4485 cut-off events. For 159742/159948 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 28924 event pairs, 635 based on Foata normal form. 64/4372 useless extension candidates. Maximal degree in co-relation 29845. Up to 3825 conditions per place. [2024-05-12 11:19:50,640 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 315 selfloop transitions, 31 changer transitions 0/358 dead transitions. [2024-05-12 11:19:50,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 358 transitions, 5385 flow [2024-05-12 11:19:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:19:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:19:50,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-05-12 11:19:50,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-05-12 11:19:50,641 INFO L175 Difference]: Start difference. First operand has 299 places, 316 transitions, 4157 flow. Second operand 10 states and 177 transitions. [2024-05-12 11:19:50,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 358 transitions, 5385 flow [2024-05-12 11:19:51,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 358 transitions, 5320 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 11:19:51,287 INFO L231 Difference]: Finished difference. Result has 301 places, 320 transitions, 4249 flow [2024-05-12 11:19:51,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4092, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4249, PETRI_PLACES=301, PETRI_TRANSITIONS=320} [2024-05-12 11:19:51,287 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-05-12 11:19:51,287 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 320 transitions, 4249 flow [2024-05-12 11:19:51,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:51,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:19:51,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:19:51,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 11:19:51,288 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:19:51,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:19:51,288 INFO L85 PathProgramCache]: Analyzing trace with hash 208032047, now seen corresponding path program 16 times [2024-05-12 11:19:51,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:19:51,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850198874] [2024-05-12 11:19:51,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:19:51,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:19:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:19:57,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:19:57,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:19:57,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850198874] [2024-05-12 11:19:57,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850198874] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:19:57,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:19:57,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:19:57,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642693231] [2024-05-12 11:19:57,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:19:57,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:19:57,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:19:57,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:19:57,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:19:58,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:19:58,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 320 transitions, 4249 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:19:58,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:19:58,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:19:58,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:19:59,709 INFO L124 PetriNetUnfolderBase]: 2653/4514 cut-off events. [2024-05-12 11:19:59,709 INFO L125 PetriNetUnfolderBase]: For 158003/158196 co-relation queries the response was YES. [2024-05-12 11:19:59,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29897 conditions, 4514 events. 2653/4514 cut-off events. For 158003/158196 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 29365 event pairs, 644 based on Foata normal form. 58/4398 useless extension candidates. Maximal degree in co-relation 29756. Up to 3931 conditions per place. [2024-05-12 11:19:59,764 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 319 selfloop transitions, 25 changer transitions 0/356 dead transitions. [2024-05-12 11:19:59,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 356 transitions, 5091 flow [2024-05-12 11:19:59,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:19:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:19:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-05-12 11:19:59,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45263157894736844 [2024-05-12 11:19:59,765 INFO L175 Difference]: Start difference. First operand has 301 places, 320 transitions, 4249 flow. Second operand 10 states and 172 transitions. [2024-05-12 11:19:59,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 356 transitions, 5091 flow [2024-05-12 11:20:00,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 356 transitions, 4886 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-05-12 11:20:00,534 INFO L231 Difference]: Finished difference. Result has 303 places, 320 transitions, 4099 flow [2024-05-12 11:20:00,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4099, PETRI_PLACES=303, PETRI_TRANSITIONS=320} [2024-05-12 11:20:00,534 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 261 predicate places. [2024-05-12 11:20:00,535 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 320 transitions, 4099 flow [2024-05-12 11:20:00,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:20:00,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:20:00,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:20:00,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 11:20:00,535 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:20:00,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:20:00,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1072059155, now seen corresponding path program 17 times [2024-05-12 11:20:00,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:20:00,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827794070] [2024-05-12 11:20:00,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:20:00,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:20:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:20:06,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:20:06,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:20:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827794070] [2024-05-12 11:20:06,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827794070] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:20:06,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:20:06,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:20:06,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904100618] [2024-05-12 11:20:06,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:20:06,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:20:06,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:20:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:20:06,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:20:06,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:20:06,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 320 transitions, 4099 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:20:06,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:20:06,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:20:06,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:20:07,758 INFO L124 PetriNetUnfolderBase]: 2647/4473 cut-off events. [2024-05-12 11:20:07,758 INFO L125 PetriNetUnfolderBase]: For 151538/151731 co-relation queries the response was YES. [2024-05-12 11:20:07,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28890 conditions, 4473 events. 2647/4473 cut-off events. For 151538/151731 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 28866 event pairs, 663 based on Foata normal form. 79/4370 useless extension candidates. Maximal degree in co-relation 28749. Up to 3942 conditions per place. [2024-05-12 11:20:07,811 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 315 selfloop transitions, 29 changer transitions 0/356 dead transitions. [2024-05-12 11:20:07,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 356 transitions, 4983 flow [2024-05-12 11:20:07,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:20:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:20:07,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-05-12 11:20:07,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44473684210526315 [2024-05-12 11:20:07,812 INFO L175 Difference]: Start difference. First operand has 303 places, 320 transitions, 4099 flow. Second operand 10 states and 169 transitions. [2024-05-12 11:20:07,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 356 transitions, 4983 flow [2024-05-12 11:20:08,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 356 transitions, 4857 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-05-12 11:20:08,712 INFO L231 Difference]: Finished difference. Result has 304 places, 322 transitions, 4084 flow [2024-05-12 11:20:08,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3973, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4084, PETRI_PLACES=304, PETRI_TRANSITIONS=322} [2024-05-12 11:20:08,713 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-05-12 11:20:08,713 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 322 transitions, 4084 flow [2024-05-12 11:20:08,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 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) [2024-05-12 11:20:08,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:20:08,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:20:08,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 11:20:08,714 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:20:08,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:20:08,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1705024629, now seen corresponding path program 1 times [2024-05-12 11:20:08,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:20:08,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678818339] [2024-05-12 11:20:08,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:20:08,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:20:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:20:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:20:14,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:20:14,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678818339] [2024-05-12 11:20:14,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678818339] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:20:14,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:20:14,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:20:14,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255264067] [2024-05-12 11:20:14,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:20:14,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:20:14,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:20:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:20:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:20:15,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:20:15,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 322 transitions, 4084 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:20:15,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:20:15,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:20:15,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:20:17,047 INFO L124 PetriNetUnfolderBase]: 2683/4799 cut-off events. [2024-05-12 11:20:17,047 INFO L125 PetriNetUnfolderBase]: For 150741/150848 co-relation queries the response was YES. [2024-05-12 11:20:17,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29615 conditions, 4799 events. 2683/4799 cut-off events. For 150741/150848 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 33142 event pairs, 545 based on Foata normal form. 44/4723 useless extension candidates. Maximal degree in co-relation 29475. Up to 3591 conditions per place. [2024-05-12 11:20:17,108 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 324 selfloop transitions, 54 changer transitions 0/390 dead transitions. [2024-05-12 11:20:17,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 390 transitions, 5315 flow [2024-05-12 11:20:17,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-05-12 11:20:17,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-05-12 11:20:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 231 transitions. [2024-05-12 11:20:17,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676113360323887 [2024-05-12 11:20:17,109 INFO L175 Difference]: Start difference. First operand has 304 places, 322 transitions, 4084 flow. Second operand 13 states and 231 transitions. [2024-05-12 11:20:17,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 390 transitions, 5315 flow [2024-05-12 11:20:17,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 390 transitions, 5194 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-05-12 11:20:17,813 INFO L231 Difference]: Finished difference. Result has 308 places, 325 transitions, 4126 flow [2024-05-12 11:20:17,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4126, PETRI_PLACES=308, PETRI_TRANSITIONS=325} [2024-05-12 11:20:17,814 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 266 predicate places. [2024-05-12 11:20:17,814 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 325 transitions, 4126 flow [2024-05-12 11:20:17,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:20:17,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:20:17,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:20:17,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 11:20:17,814 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:20:17,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:20:17,815 INFO L85 PathProgramCache]: Analyzing trace with hash -770626461, now seen corresponding path program 2 times [2024-05-12 11:20:17,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:20:17,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125547157] [2024-05-12 11:20:17,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:20:17,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:20:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:20:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:20:24,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:20:24,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125547157] [2024-05-12 11:20:24,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125547157] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:20:24,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:20:24,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:20:24,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873453607] [2024-05-12 11:20:24,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:20:24,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:20:24,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:20:24,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:20:24,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:20:24,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:20:24,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 325 transitions, 4126 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:20:24,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:20:24,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:20:24,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:20:25,805 INFO L124 PetriNetUnfolderBase]: 2702/4816 cut-off events. [2024-05-12 11:20:25,805 INFO L125 PetriNetUnfolderBase]: For 146678/146785 co-relation queries the response was YES. [2024-05-12 11:20:25,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29611 conditions, 4816 events. 2702/4816 cut-off events. For 146678/146785 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 33204 event pairs, 600 based on Foata normal form. 27/4718 useless extension candidates. Maximal degree in co-relation 29471. Up to 3778 conditions per place. [2024-05-12 11:20:25,867 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 311 selfloop transitions, 49 changer transitions 0/372 dead transitions. [2024-05-12 11:20:25,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 372 transitions, 5212 flow [2024-05-12 11:20:25,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:20:25,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:20:25,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-05-12 11:20:25,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 11:20:25,868 INFO L175 Difference]: Start difference. First operand has 308 places, 325 transitions, 4126 flow. Second operand 10 states and 180 transitions. [2024-05-12 11:20:25,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 372 transitions, 5212 flow [2024-05-12 11:20:26,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 372 transitions, 5116 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-05-12 11:20:26,705 INFO L231 Difference]: Finished difference. Result has 310 places, 326 transitions, 4151 flow [2024-05-12 11:20:26,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4036, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4151, PETRI_PLACES=310, PETRI_TRANSITIONS=326} [2024-05-12 11:20:26,706 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-05-12 11:20:26,706 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 326 transitions, 4151 flow [2024-05-12 11:20:26,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:20:26,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:20:26,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:20:26,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 11:20:26,706 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:20:26,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:20:26,707 INFO L85 PathProgramCache]: Analyzing trace with hash -770622741, now seen corresponding path program 3 times [2024-05-12 11:20:26,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:20:26,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855986183] [2024-05-12 11:20:26,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:20:26,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:20:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:20:33,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:20:33,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:20:33,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855986183] [2024-05-12 11:20:33,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855986183] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:20:33,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:20:33,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:20:33,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115649009] [2024-05-12 11:20:33,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:20:33,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:20:33,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:20:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:20:33,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:20:33,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:20:33,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 326 transitions, 4151 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:20:33,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:20:33,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:20:33,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:20:34,899 INFO L124 PetriNetUnfolderBase]: 2699/4813 cut-off events. [2024-05-12 11:20:34,899 INFO L125 PetriNetUnfolderBase]: For 144729/144836 co-relation queries the response was YES. [2024-05-12 11:20:34,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29498 conditions, 4813 events. 2699/4813 cut-off events. For 144729/144836 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 33237 event pairs, 607 based on Foata normal form. 27/4716 useless extension candidates. Maximal degree in co-relation 29356. Up to 3948 conditions per place. [2024-05-12 11:20:34,963 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 302 selfloop transitions, 56 changer transitions 0/370 dead transitions. [2024-05-12 11:20:34,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 370 transitions, 5065 flow [2024-05-12 11:20:34,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:20:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:20:34,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-05-12 11:20:34,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-05-12 11:20:34,964 INFO L175 Difference]: Start difference. First operand has 310 places, 326 transitions, 4151 flow. Second operand 10 states and 178 transitions. [2024-05-12 11:20:34,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 370 transitions, 5065 flow [2024-05-12 11:20:35,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 370 transitions, 4961 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-05-12 11:20:35,955 INFO L231 Difference]: Finished difference. Result has 312 places, 326 transitions, 4164 flow [2024-05-12 11:20:35,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4047, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4164, PETRI_PLACES=312, PETRI_TRANSITIONS=326} [2024-05-12 11:20:35,955 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 270 predicate places. [2024-05-12 11:20:35,956 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 326 transitions, 4164 flow [2024-05-12 11:20:35,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:20:35,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:20:35,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:20:35,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 11:20:35,956 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:20:35,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:20:35,957 INFO L85 PathProgramCache]: Analyzing trace with hash -683781046, now seen corresponding path program 1 times [2024-05-12 11:20:35,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:20:35,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075964467] [2024-05-12 11:20:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:20:35,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:20:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:20:44,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:20:44,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:20:44,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075964467] [2024-05-12 11:20:44,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075964467] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:20:44,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:20:44,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:20:44,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661385952] [2024-05-12 11:20:44,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:20:44,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:20:44,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:20:44,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:20:44,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:20:44,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:20:44,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 326 transitions, 4164 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:20:44,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:20:44,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:20:44,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:20:46,303 INFO L124 PetriNetUnfolderBase]: 2695/4819 cut-off events. [2024-05-12 11:20:46,304 INFO L125 PetriNetUnfolderBase]: For 141902/142009 co-relation queries the response was YES. [2024-05-12 11:20:46,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29348 conditions, 4819 events. 2695/4819 cut-off events. For 141902/142009 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 33380 event pairs, 596 based on Foata normal form. 44/4742 useless extension candidates. Maximal degree in co-relation 29205. Up to 4027 conditions per place. [2024-05-12 11:20:46,359 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 324 selfloop transitions, 42 changer transitions 0/378 dead transitions. [2024-05-12 11:20:46,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 378 transitions, 5147 flow [2024-05-12 11:20:46,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:20:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:20:46,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-05-12 11:20:46,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172248803827753 [2024-05-12 11:20:46,361 INFO L175 Difference]: Start difference. First operand has 312 places, 326 transitions, 4164 flow. Second operand 11 states and 193 transitions. [2024-05-12 11:20:46,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 378 transitions, 5147 flow [2024-05-12 11:20:47,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 378 transitions, 5005 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-05-12 11:20:47,127 INFO L231 Difference]: Finished difference. Result has 315 places, 328 transitions, 4145 flow [2024-05-12 11:20:47,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4022, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4145, PETRI_PLACES=315, PETRI_TRANSITIONS=328} [2024-05-12 11:20:47,127 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-05-12 11:20:47,127 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 328 transitions, 4145 flow [2024-05-12 11:20:47,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:20:47,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:20:47,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:20:47,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 11:20:47,128 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:20:47,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:20:47,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1399359692, now seen corresponding path program 2 times [2024-05-12 11:20:47,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:20:47,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617579674] [2024-05-12 11:20:47,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:20:47,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:20:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:20:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:20:55,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:20:55,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617579674] [2024-05-12 11:20:55,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617579674] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:20:55,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:20:55,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:20:55,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990685576] [2024-05-12 11:20:55,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:20:55,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:20:55,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:20:55,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:20:55,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:20:55,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:20:55,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 328 transitions, 4145 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:20:55,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:20:55,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:20:55,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:20:57,027 INFO L124 PetriNetUnfolderBase]: 2718/4757 cut-off events. [2024-05-12 11:20:57,027 INFO L125 PetriNetUnfolderBase]: For 143902/144002 co-relation queries the response was YES. [2024-05-12 11:20:57,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29224 conditions, 4757 events. 2718/4757 cut-off events. For 143902/144002 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 32101 event pairs, 412 based on Foata normal form. 52/4657 useless extension candidates. Maximal degree in co-relation 29079. Up to 2146 conditions per place. [2024-05-12 11:20:57,086 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 221 selfloop transitions, 146 changer transitions 0/379 dead transitions. [2024-05-12 11:20:57,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 379 transitions, 5585 flow [2024-05-12 11:20:57,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:20:57,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:20:57,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2024-05-12 11:20:57,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5236842105263158 [2024-05-12 11:20:57,087 INFO L175 Difference]: Start difference. First operand has 315 places, 328 transitions, 4145 flow. Second operand 10 states and 199 transitions. [2024-05-12 11:20:57,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 379 transitions, 5585 flow [2024-05-12 11:20:57,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 379 transitions, 5493 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 11:20:57,873 INFO L231 Difference]: Finished difference. Result has 317 places, 330 transitions, 4381 flow [2024-05-12 11:20:57,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4381, PETRI_PLACES=317, PETRI_TRANSITIONS=330} [2024-05-12 11:20:57,873 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 275 predicate places. [2024-05-12 11:20:57,874 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 330 transitions, 4381 flow [2024-05-12 11:20:57,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:20:57,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:20:57,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:20:57,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 11:20:57,874 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:20:57,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:20:57,875 INFO L85 PathProgramCache]: Analyzing trace with hash -792918289, now seen corresponding path program 4 times [2024-05-12 11:20:57,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:20:57,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066961160] [2024-05-12 11:20:57,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:20:57,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:20:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:21:04,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:21:04,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:21:04,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066961160] [2024-05-12 11:21:04,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066961160] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:21:04,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:21:04,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:21:04,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126683793] [2024-05-12 11:21:04,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:21:04,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:21:04,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:21:04,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:21:04,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:21:05,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:21:05,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 330 transitions, 4381 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:21:05,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:21:05,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:21:05,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:21:06,623 INFO L124 PetriNetUnfolderBase]: 2734/4699 cut-off events. [2024-05-12 11:21:06,624 INFO L125 PetriNetUnfolderBase]: For 150709/150813 co-relation queries the response was YES. [2024-05-12 11:21:06,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30118 conditions, 4699 events. 2734/4699 cut-off events. For 150709/150813 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 31123 event pairs, 360 based on Foata normal form. 69/4617 useless extension candidates. Maximal degree in co-relation 29972. Up to 3568 conditions per place. [2024-05-12 11:21:06,688 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 287 selfloop transitions, 81 changer transitions 0/380 dead transitions. [2024-05-12 11:21:06,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 380 transitions, 5359 flow [2024-05-12 11:21:06,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:21:06,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:21:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-05-12 11:21:06,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48325358851674644 [2024-05-12 11:21:06,689 INFO L175 Difference]: Start difference. First operand has 317 places, 330 transitions, 4381 flow. Second operand 11 states and 202 transitions. [2024-05-12 11:21:06,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 380 transitions, 5359 flow [2024-05-12 11:21:07,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 380 transitions, 5060 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-05-12 11:21:07,591 INFO L231 Difference]: Finished difference. Result has 320 places, 331 transitions, 4266 flow [2024-05-12 11:21:07,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4082, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4266, PETRI_PLACES=320, PETRI_TRANSITIONS=331} [2024-05-12 11:21:07,591 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 278 predicate places. [2024-05-12 11:21:07,592 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 331 transitions, 4266 flow [2024-05-12 11:21:07,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:21:07,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:21:07,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:21:07,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 11:21:07,592 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:21:07,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:21:07,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1399149946, now seen corresponding path program 1 times [2024-05-12 11:21:07,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:21:07,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598883933] [2024-05-12 11:21:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:21:07,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:21:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:21:14,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:21:14,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:21:14,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598883933] [2024-05-12 11:21:14,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598883933] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:21:14,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:21:14,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:21:14,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778087082] [2024-05-12 11:21:14,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:21:14,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:21:14,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:21:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:21:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:21:14,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:21:14,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 331 transitions, 4266 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:21:14,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:21:14,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:21:14,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:21:16,422 INFO L124 PetriNetUnfolderBase]: 2751/4705 cut-off events. [2024-05-12 11:21:16,422 INFO L125 PetriNetUnfolderBase]: For 148688/148801 co-relation queries the response was YES. [2024-05-12 11:21:16,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29643 conditions, 4705 events. 2751/4705 cut-off events. For 148688/148801 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 31119 event pairs, 325 based on Foata normal form. 60/4610 useless extension candidates. Maximal degree in co-relation 29497. Up to 3771 conditions per place. [2024-05-12 11:21:16,484 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 307 selfloop transitions, 58 changer transitions 0/377 dead transitions. [2024-05-12 11:21:16,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 377 transitions, 5208 flow [2024-05-12 11:21:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:21:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:21:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-05-12 11:21:16,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-05-12 11:21:16,485 INFO L175 Difference]: Start difference. First operand has 320 places, 331 transitions, 4266 flow. Second operand 10 states and 184 transitions. [2024-05-12 11:21:16,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 377 transitions, 5208 flow [2024-05-12 11:21:17,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 377 transitions, 5036 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-05-12 11:21:17,317 INFO L231 Difference]: Finished difference. Result has 321 places, 332 transitions, 4224 flow [2024-05-12 11:21:17,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4094, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4224, PETRI_PLACES=321, PETRI_TRANSITIONS=332} [2024-05-12 11:21:17,318 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-05-12 11:21:17,318 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 332 transitions, 4224 flow [2024-05-12 11:21:17,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:21:17,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:21:17,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:21:17,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 11:21:17,319 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:21:17,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:21:17,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1963285196, now seen corresponding path program 3 times [2024-05-12 11:21:17,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:21:17,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630011552] [2024-05-12 11:21:17,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:21:17,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:21:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:21:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:21:26,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:21:26,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630011552] [2024-05-12 11:21:26,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630011552] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:21:26,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:21:26,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:21:26,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167573857] [2024-05-12 11:21:26,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:21:26,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:21:26,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:21:26,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:21:26,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:21:26,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:21:26,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 332 transitions, 4224 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:21:26,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:21:26,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:21:26,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:21:28,232 INFO L124 PetriNetUnfolderBase]: 2749/4761 cut-off events. [2024-05-12 11:21:28,232 INFO L125 PetriNetUnfolderBase]: For 146327/146432 co-relation queries the response was YES. [2024-05-12 11:21:28,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29493 conditions, 4761 events. 2749/4761 cut-off events. For 146327/146432 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 31972 event pairs, 327 based on Foata normal form. 69/4677 useless extension candidates. Maximal degree in co-relation 29346. Up to 3082 conditions per place. [2024-05-12 11:21:28,295 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 265 selfloop transitions, 108 changer transitions 0/385 dead transitions. [2024-05-12 11:21:28,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 385 transitions, 5226 flow [2024-05-12 11:21:28,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:21:28,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:21:28,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-05-12 11:21:28,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-05-12 11:21:28,296 INFO L175 Difference]: Start difference. First operand has 321 places, 332 transitions, 4224 flow. Second operand 11 states and 206 transitions. [2024-05-12 11:21:28,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 385 transitions, 5226 flow [2024-05-12 11:21:29,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 385 transitions, 5094 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-05-12 11:21:29,278 INFO L231 Difference]: Finished difference. Result has 325 places, 334 transitions, 4352 flow [2024-05-12 11:21:29,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4092, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4352, PETRI_PLACES=325, PETRI_TRANSITIONS=334} [2024-05-12 11:21:29,279 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 283 predicate places. [2024-05-12 11:21:29,279 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 334 transitions, 4352 flow [2024-05-12 11:21:29,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:21:29,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:21:29,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:21:29,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 11:21:29,280 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:21:29,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:21:29,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1404727807, now seen corresponding path program 5 times [2024-05-12 11:21:29,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:21:29,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788365168] [2024-05-12 11:21:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:21:29,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:21:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:21:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:21:35,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:21:35,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788365168] [2024-05-12 11:21:35,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788365168] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:21:35,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:21:35,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:21:35,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919709709] [2024-05-12 11:21:35,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:21:35,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:21:35,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:21:35,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:21:35,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:21:35,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:21:35,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 334 transitions, 4352 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:21:35,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:21:35,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:21:35,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:21:37,122 INFO L124 PetriNetUnfolderBase]: 2760/4786 cut-off events. [2024-05-12 11:21:37,122 INFO L125 PetriNetUnfolderBase]: For 148649/148755 co-relation queries the response was YES. [2024-05-12 11:21:37,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30050 conditions, 4786 events. 2760/4786 cut-off events. For 148649/148755 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 32063 event pairs, 388 based on Foata normal form. 57/4691 useless extension candidates. Maximal degree in co-relation 29901. Up to 3280 conditions per place. [2024-05-12 11:21:37,174 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 266 selfloop transitions, 101 changer transitions 0/379 dead transitions. [2024-05-12 11:21:37,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 379 transitions, 5304 flow [2024-05-12 11:21:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:21:37,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:21:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-05-12 11:21:37,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026315789473684 [2024-05-12 11:21:37,176 INFO L175 Difference]: Start difference. First operand has 325 places, 334 transitions, 4352 flow. Second operand 10 states and 191 transitions. [2024-05-12 11:21:37,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 379 transitions, 5304 flow [2024-05-12 11:21:37,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 379 transitions, 5096 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-05-12 11:21:37,865 INFO L231 Difference]: Finished difference. Result has 326 places, 335 transitions, 4370 flow [2024-05-12 11:21:37,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4144, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4370, PETRI_PLACES=326, PETRI_TRANSITIONS=335} [2024-05-12 11:21:37,866 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2024-05-12 11:21:37,866 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 335 transitions, 4370 flow [2024-05-12 11:21:37,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:21:37,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:21:37,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:21:37,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 11:21:37,866 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:21:37,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:21:37,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1404875677, now seen corresponding path program 6 times [2024-05-12 11:21:37,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:21:37,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742723849] [2024-05-12 11:21:37,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:21:37,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:21:37,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:21:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:21:44,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:21:44,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742723849] [2024-05-12 11:21:44,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742723849] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:21:44,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:21:44,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:21:44,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825406801] [2024-05-12 11:21:44,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:21:44,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:21:44,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:21:44,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:21:44,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:21:44,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:21:44,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 335 transitions, 4370 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:21:44,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:21:44,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:21:44,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:21:46,627 INFO L124 PetriNetUnfolderBase]: 2780/4767 cut-off events. [2024-05-12 11:21:46,627 INFO L125 PetriNetUnfolderBase]: For 152229/152336 co-relation queries the response was YES. [2024-05-12 11:21:46,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30086 conditions, 4767 events. 2780/4767 cut-off events. For 152229/152336 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 31650 event pairs, 358 based on Foata normal form. 71/4685 useless extension candidates. Maximal degree in co-relation 29936. Up to 3550 conditions per place. [2024-05-12 11:21:46,688 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 292 selfloop transitions, 82 changer transitions 0/386 dead transitions. [2024-05-12 11:21:46,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 386 transitions, 5366 flow [2024-05-12 11:21:46,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:21:46,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:21:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-05-12 11:21:46,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-05-12 11:21:46,689 INFO L175 Difference]: Start difference. First operand has 326 places, 335 transitions, 4370 flow. Second operand 11 states and 205 transitions. [2024-05-12 11:21:46,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 386 transitions, 5366 flow [2024-05-12 11:21:47,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 386 transitions, 5152 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-05-12 11:21:47,517 INFO L231 Difference]: Finished difference. Result has 329 places, 336 transitions, 4346 flow [2024-05-12 11:21:47,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4156, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4346, PETRI_PLACES=329, PETRI_TRANSITIONS=336} [2024-05-12 11:21:47,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 287 predicate places. [2024-05-12 11:21:47,517 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 336 transitions, 4346 flow [2024-05-12 11:21:47,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:21:47,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:21:47,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:21:47,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 11:21:47,518 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:21:47,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:21:47,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1404722072, now seen corresponding path program 4 times [2024-05-12 11:21:47,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:21:47,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758687226] [2024-05-12 11:21:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:21:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:21:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:21:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:21:55,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:21:55,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758687226] [2024-05-12 11:21:55,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758687226] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:21:55,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:21:55,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:21:55,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586869034] [2024-05-12 11:21:55,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:21:55,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:21:55,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:21:55,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:21:55,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:21:55,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:21:55,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 336 transitions, 4346 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:21:55,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:21:55,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:21:55,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:21:57,229 INFO L124 PetriNetUnfolderBase]: 2778/4813 cut-off events. [2024-05-12 11:21:57,229 INFO L125 PetriNetUnfolderBase]: For 149498/149606 co-relation queries the response was YES. [2024-05-12 11:21:57,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29931 conditions, 4813 events. 2778/4813 cut-off events. For 149498/149606 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 32433 event pairs, 340 based on Foata normal form. 71/4731 useless extension candidates. Maximal degree in co-relation 29780. Up to 3135 conditions per place. [2024-05-12 11:21:57,292 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 275 selfloop transitions, 101 changer transitions 0/388 dead transitions. [2024-05-12 11:21:57,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 388 transitions, 5338 flow [2024-05-12 11:21:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:21:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:21:57,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-05-12 11:21:57,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 11:21:57,293 INFO L175 Difference]: Start difference. First operand has 329 places, 336 transitions, 4346 flow. Second operand 11 states and 209 transitions. [2024-05-12 11:21:57,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 388 transitions, 5338 flow [2024-05-12 11:21:57,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 388 transitions, 5137 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-05-12 11:21:57,967 INFO L231 Difference]: Finished difference. Result has 331 places, 336 transitions, 4352 flow [2024-05-12 11:21:57,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4145, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4352, PETRI_PLACES=331, PETRI_TRANSITIONS=336} [2024-05-12 11:21:57,968 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 289 predicate places. [2024-05-12 11:21:57,968 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 336 transitions, 4352 flow [2024-05-12 11:21:57,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:21:57,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:21:57,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:21:57,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 11:21:57,968 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:21:57,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:21:57,969 INFO L85 PathProgramCache]: Analyzing trace with hash -357955368, now seen corresponding path program 2 times [2024-05-12 11:21:57,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:21:57,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798038146] [2024-05-12 11:21:57,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:21:57,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:21:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:22:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:22:06,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:22:06,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798038146] [2024-05-12 11:22:06,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798038146] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:22:06,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:22:06,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:22:06,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526206385] [2024-05-12 11:22:06,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:22:06,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:22:06,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:22:06,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:22:06,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:22:06,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:22:06,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 336 transitions, 4352 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:06,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:22:06,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:22:06,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:22:07,984 INFO L124 PetriNetUnfolderBase]: 2789/4896 cut-off events. [2024-05-12 11:22:07,984 INFO L125 PetriNetUnfolderBase]: For 151566/151729 co-relation queries the response was YES. [2024-05-12 11:22:08,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30194 conditions, 4896 events. 2789/4896 cut-off events. For 151566/151729 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 33422 event pairs, 556 based on Foata normal form. 52/4794 useless extension candidates. Maximal degree in co-relation 30044. Up to 4131 conditions per place. [2024-05-12 11:22:08,048 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 332 selfloop transitions, 35 changer transitions 0/379 dead transitions. [2024-05-12 11:22:08,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 379 transitions, 5297 flow [2024-05-12 11:22:08,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:22:08,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:22:08,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-05-12 11:22:08,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-05-12 11:22:08,049 INFO L175 Difference]: Start difference. First operand has 331 places, 336 transitions, 4352 flow. Second operand 10 states and 178 transitions. [2024-05-12 11:22:08,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 379 transitions, 5297 flow [2024-05-12 11:22:08,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 379 transitions, 5084 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-05-12 11:22:08,832 INFO L231 Difference]: Finished difference. Result has 333 places, 338 transitions, 4241 flow [2024-05-12 11:22:08,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4139, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4241, PETRI_PLACES=333, PETRI_TRANSITIONS=338} [2024-05-12 11:22:08,833 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-05-12 11:22:08,833 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 338 transitions, 4241 flow [2024-05-12 11:22:08,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:08,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:22:08,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:22:08,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 11:22:08,834 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:22:08,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:22:08,834 INFO L85 PathProgramCache]: Analyzing trace with hash -357946068, now seen corresponding path program 3 times [2024-05-12 11:22:08,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:22:08,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423852475] [2024-05-12 11:22:08,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:22:08,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:22:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:22:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:22:16,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:22:16,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423852475] [2024-05-12 11:22:16,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423852475] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:22:16,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:22:16,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:22:16,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464997590] [2024-05-12 11:22:16,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:22:16,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:22:16,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:22:16,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:22:16,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:22:16,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:22:16,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 338 transitions, 4241 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:16,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:22:16,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:22:16,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:22:17,863 INFO L124 PetriNetUnfolderBase]: 2811/4940 cut-off events. [2024-05-12 11:22:17,864 INFO L125 PetriNetUnfolderBase]: For 153412/153576 co-relation queries the response was YES. [2024-05-12 11:22:17,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29953 conditions, 4940 events. 2811/4940 cut-off events. For 153412/153576 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 33815 event pairs, 556 based on Foata normal form. 58/4840 useless extension candidates. Maximal degree in co-relation 29801. Up to 4169 conditions per place. [2024-05-12 11:22:17,925 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 334 selfloop transitions, 34 changer transitions 0/380 dead transitions. [2024-05-12 11:22:17,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 380 transitions, 5177 flow [2024-05-12 11:22:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:22:17,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:22:17,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-05-12 11:22:17,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-05-12 11:22:17,927 INFO L175 Difference]: Start difference. First operand has 333 places, 338 transitions, 4241 flow. Second operand 10 states and 177 transitions. [2024-05-12 11:22:17,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 380 transitions, 5177 flow [2024-05-12 11:22:18,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 380 transitions, 5104 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-05-12 11:22:18,645 INFO L231 Difference]: Finished difference. Result has 336 places, 339 transitions, 4254 flow [2024-05-12 11:22:18,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4168, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4254, PETRI_PLACES=336, PETRI_TRANSITIONS=339} [2024-05-12 11:22:18,646 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 294 predicate places. [2024-05-12 11:22:18,646 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 339 transitions, 4254 flow [2024-05-12 11:22:18,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:18,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:22:18,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:22:18,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 11:22:18,646 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:22:18,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:22:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -559513834, now seen corresponding path program 5 times [2024-05-12 11:22:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:22:18,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996157478] [2024-05-12 11:22:18,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:22:18,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:22:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:22:27,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:22:27,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:22:27,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996157478] [2024-05-12 11:22:27,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996157478] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:22:27,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:22:27,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:22:27,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359254046] [2024-05-12 11:22:27,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:22:27,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:22:27,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:22:27,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:22:27,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:22:27,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:22:27,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 339 transitions, 4254 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:27,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:22:27,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:22:27,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:22:29,690 INFO L124 PetriNetUnfolderBase]: 2830/5017 cut-off events. [2024-05-12 11:22:29,690 INFO L125 PetriNetUnfolderBase]: For 157200/157369 co-relation queries the response was YES. [2024-05-12 11:22:29,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30234 conditions, 5017 events. 2830/5017 cut-off events. For 157200/157369 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 34748 event pairs, 532 based on Foata normal form. 50/4923 useless extension candidates. Maximal degree in co-relation 30081. Up to 3947 conditions per place. [2024-05-12 11:22:29,746 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 328 selfloop transitions, 51 changer transitions 0/391 dead transitions. [2024-05-12 11:22:29,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 391 transitions, 5278 flow [2024-05-12 11:22:29,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:22:29,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:22:29,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-05-12 11:22:29,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-05-12 11:22:29,747 INFO L175 Difference]: Start difference. First operand has 336 places, 339 transitions, 4254 flow. Second operand 11 states and 206 transitions. [2024-05-12 11:22:29,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 391 transitions, 5278 flow [2024-05-12 11:22:30,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 391 transitions, 5202 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-05-12 11:22:30,507 INFO L231 Difference]: Finished difference. Result has 339 places, 341 transitions, 4321 flow [2024-05-12 11:22:30,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4178, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4321, PETRI_PLACES=339, PETRI_TRANSITIONS=341} [2024-05-12 11:22:30,507 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2024-05-12 11:22:30,507 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 341 transitions, 4321 flow [2024-05-12 11:22:30,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:30,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:22:30,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:22:30,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 11:22:30,508 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:22:30,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:22:30,508 INFO L85 PathProgramCache]: Analyzing trace with hash -559519414, now seen corresponding path program 6 times [2024-05-12 11:22:30,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:22:30,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540867495] [2024-05-12 11:22:30,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:22:30,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:22:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:22:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:22:36,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:22:36,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540867495] [2024-05-12 11:22:36,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540867495] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:22:36,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:22:36,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:22:36,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201769520] [2024-05-12 11:22:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:22:36,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:22:36,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:22:36,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:22:36,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:22:37,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:22:37,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 341 transitions, 4321 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:37,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:22:37,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:22:37,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:22:38,851 INFO L124 PetriNetUnfolderBase]: 2884/5049 cut-off events. [2024-05-12 11:22:38,851 INFO L125 PetriNetUnfolderBase]: For 168663/168835 co-relation queries the response was YES. [2024-05-12 11:22:38,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31035 conditions, 5049 events. 2884/5049 cut-off events. For 168663/168835 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 34532 event pairs, 494 based on Foata normal form. 64/4964 useless extension candidates. Maximal degree in co-relation 30881. Up to 3936 conditions per place. [2024-05-12 11:22:38,915 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 324 selfloop transitions, 60 changer transitions 0/396 dead transitions. [2024-05-12 11:22:38,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 396 transitions, 5563 flow [2024-05-12 11:22:38,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:22:38,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:22:38,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-05-12 11:22:38,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 11:22:38,917 INFO L175 Difference]: Start difference. First operand has 339 places, 341 transitions, 4321 flow. Second operand 11 states and 209 transitions. [2024-05-12 11:22:38,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 396 transitions, 5563 flow [2024-05-12 11:22:39,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 396 transitions, 5444 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-05-12 11:22:39,709 INFO L231 Difference]: Finished difference. Result has 342 places, 345 transitions, 4410 flow [2024-05-12 11:22:39,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4202, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4410, PETRI_PLACES=342, PETRI_TRANSITIONS=345} [2024-05-12 11:22:39,710 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2024-05-12 11:22:39,710 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 345 transitions, 4410 flow [2024-05-12 11:22:39,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:39,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:22:39,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:22:39,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 11:22:39,711 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:22:39,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:22:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash -365574424, now seen corresponding path program 7 times [2024-05-12 11:22:39,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:22:39,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882576758] [2024-05-12 11:22:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:22:39,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:22:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:22:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:22:47,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:22:47,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882576758] [2024-05-12 11:22:47,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882576758] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:22:47,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:22:47,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:22:47,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932265693] [2024-05-12 11:22:47,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:22:47,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:22:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:22:47,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:22:47,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:22:47,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:22:47,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 345 transitions, 4410 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:47,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:22:47,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:22:47,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:22:49,713 INFO L124 PetriNetUnfolderBase]: 2909/5084 cut-off events. [2024-05-12 11:22:49,713 INFO L125 PetriNetUnfolderBase]: For 171909/172080 co-relation queries the response was YES. [2024-05-12 11:22:49,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31416 conditions, 5084 events. 2909/5084 cut-off events. For 171909/172080 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 34801 event pairs, 576 based on Foata normal form. 48/4972 useless extension candidates. Maximal degree in co-relation 31260. Up to 4212 conditions per place. [2024-05-12 11:22:49,775 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 342 selfloop transitions, 41 changer transitions 0/395 dead transitions. [2024-05-12 11:22:49,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 395 transitions, 5432 flow [2024-05-12 11:22:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:22:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:22:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-05-12 11:22:49,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47607655502392343 [2024-05-12 11:22:49,776 INFO L175 Difference]: Start difference. First operand has 342 places, 345 transitions, 4410 flow. Second operand 11 states and 199 transitions. [2024-05-12 11:22:49,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 395 transitions, 5432 flow [2024-05-12 11:22:50,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 395 transitions, 5304 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-05-12 11:22:50,621 INFO L231 Difference]: Finished difference. Result has 345 places, 347 transitions, 4403 flow [2024-05-12 11:22:50,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4282, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4403, PETRI_PLACES=345, PETRI_TRANSITIONS=347} [2024-05-12 11:22:50,622 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 303 predicate places. [2024-05-12 11:22:50,622 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 347 transitions, 4403 flow [2024-05-12 11:22:50,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:50,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:22:50,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:22:50,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 11:22:50,623 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:22:50,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:22:50,623 INFO L85 PathProgramCache]: Analyzing trace with hash -365580159, now seen corresponding path program 7 times [2024-05-12 11:22:50,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:22:50,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265053637] [2024-05-12 11:22:50,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:22:50,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:22:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:22:56,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:22:56,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:22:56,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265053637] [2024-05-12 11:22:56,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265053637] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:22:56,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:22:56,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:22:56,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842435448] [2024-05-12 11:22:56,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:22:56,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:22:56,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:22:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:22:56,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:22:57,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:22:57,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 347 transitions, 4403 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:57,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:22:57,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:22:57,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:22:59,060 INFO L124 PetriNetUnfolderBase]: 3004/5268 cut-off events. [2024-05-12 11:22:59,060 INFO L125 PetriNetUnfolderBase]: For 215026/215212 co-relation queries the response was YES. [2024-05-12 11:22:59,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32234 conditions, 5268 events. 3004/5268 cut-off events. For 215026/215212 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 36415 event pairs, 624 based on Foata normal form. 63/5168 useless extension candidates. Maximal degree in co-relation 32077. Up to 4275 conditions per place. [2024-05-12 11:22:59,127 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 350 selfloop transitions, 38 changer transitions 0/400 dead transitions. [2024-05-12 11:22:59,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 400 transitions, 5475 flow [2024-05-12 11:22:59,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:22:59,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:22:59,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-05-12 11:22:59,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-05-12 11:22:59,128 INFO L175 Difference]: Start difference. First operand has 345 places, 347 transitions, 4403 flow. Second operand 11 states and 203 transitions. [2024-05-12 11:22:59,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 400 transitions, 5475 flow [2024-05-12 11:22:59,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 400 transitions, 5356 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-05-12 11:22:59,990 INFO L231 Difference]: Finished difference. Result has 346 places, 348 transitions, 4389 flow [2024-05-12 11:22:59,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4284, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4389, PETRI_PLACES=346, PETRI_TRANSITIONS=348} [2024-05-12 11:22:59,990 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 304 predicate places. [2024-05-12 11:22:59,990 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 348 transitions, 4389 flow [2024-05-12 11:22:59,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:22:59,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:22:59,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:22:59,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 11:22:59,991 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:22:59,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:22:59,991 INFO L85 PathProgramCache]: Analyzing trace with hash -559519569, now seen corresponding path program 8 times [2024-05-12 11:22:59,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:22:59,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793224661] [2024-05-12 11:22:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:22:59,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:23:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:23:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:23:06,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:23:06,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793224661] [2024-05-12 11:23:06,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793224661] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:23:06,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:23:06,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:23:06,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277262713] [2024-05-12 11:23:06,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:23:06,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:23:06,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:23:06,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:23:06,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:23:06,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:23:06,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 348 transitions, 4389 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:23:06,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:23:06,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:23:06,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:23:07,920 INFO L124 PetriNetUnfolderBase]: 3020/5341 cut-off events. [2024-05-12 11:23:07,920 INFO L125 PetriNetUnfolderBase]: For 181378/181613 co-relation queries the response was YES. [2024-05-12 11:23:07,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32430 conditions, 5341 events. 3020/5341 cut-off events. For 181378/181613 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 37352 event pairs, 635 based on Foata normal form. 76/5257 useless extension candidates. Maximal degree in co-relation 32272. Up to 4430 conditions per place. [2024-05-12 11:23:07,992 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 341 selfloop transitions, 43 changer transitions 0/396 dead transitions. [2024-05-12 11:23:07,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 396 transitions, 5401 flow [2024-05-12 11:23:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:23:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:23:07,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-05-12 11:23:07,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4784688995215311 [2024-05-12 11:23:07,994 INFO L175 Difference]: Start difference. First operand has 346 places, 348 transitions, 4389 flow. Second operand 11 states and 200 transitions. [2024-05-12 11:23:07,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 396 transitions, 5401 flow [2024-05-12 11:23:09,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 396 transitions, 5309 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-05-12 11:23:09,107 INFO L231 Difference]: Finished difference. Result has 348 places, 349 transitions, 4413 flow [2024-05-12 11:23:09,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4297, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4413, PETRI_PLACES=348, PETRI_TRANSITIONS=349} [2024-05-12 11:23:09,108 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 306 predicate places. [2024-05-12 11:23:09,108 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 349 transitions, 4413 flow [2024-05-12 11:23:09,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:23:09,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:23:09,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:23:09,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-05-12 11:23:09,108 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:23:09,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:23:09,109 INFO L85 PathProgramCache]: Analyzing trace with hash -559304088, now seen corresponding path program 4 times [2024-05-12 11:23:09,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:23:09,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819921753] [2024-05-12 11:23:09,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:23:09,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:23:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:23:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:23:16,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:23:16,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819921753] [2024-05-12 11:23:16,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819921753] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:23:16,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:23:16,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:23:16,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172956363] [2024-05-12 11:23:16,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:23:16,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:23:16,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:23:16,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:23:16,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:23:16,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:23:16,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 349 transitions, 4413 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:23:16,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:23:16,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:23:16,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:23:18,247 INFO L124 PetriNetUnfolderBase]: 3030/5330 cut-off events. [2024-05-12 11:23:18,247 INFO L125 PetriNetUnfolderBase]: For 184100/184277 co-relation queries the response was YES. [2024-05-12 11:23:18,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32461 conditions, 5330 events. 3030/5330 cut-off events. For 184100/184277 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 37161 event pairs, 635 based on Foata normal form. 58/5222 useless extension candidates. Maximal degree in co-relation 32302. Up to 4483 conditions per place. [2024-05-12 11:23:18,313 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 343 selfloop transitions, 38 changer transitions 0/393 dead transitions. [2024-05-12 11:23:18,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 393 transitions, 5387 flow [2024-05-12 11:23:18,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:23:18,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:23:18,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-05-12 11:23:18,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157894736842105 [2024-05-12 11:23:18,315 INFO L175 Difference]: Start difference. First operand has 348 places, 349 transitions, 4413 flow. Second operand 10 states and 183 transitions. [2024-05-12 11:23:18,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 393 transitions, 5387 flow [2024-05-12 11:23:19,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 393 transitions, 5283 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-05-12 11:23:19,289 INFO L231 Difference]: Finished difference. Result has 349 places, 350 transitions, 4405 flow [2024-05-12 11:23:19,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4309, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4405, PETRI_PLACES=349, PETRI_TRANSITIONS=350} [2024-05-12 11:23:19,289 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 307 predicate places. [2024-05-12 11:23:19,289 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 350 transitions, 4405 flow [2024-05-12 11:23:19,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:23:19,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:23:19,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:23:19,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-05-12 11:23:19,290 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:23:19,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:23:19,290 INFO L85 PathProgramCache]: Analyzing trace with hash -365364678, now seen corresponding path program 5 times [2024-05-12 11:23:19,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:23:19,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054634371] [2024-05-12 11:23:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:23:19,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:23:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:23:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:23:26,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:23:26,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054634371] [2024-05-12 11:23:26,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054634371] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:23:26,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:23:26,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:23:26,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868773363] [2024-05-12 11:23:26,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:23:26,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:23:26,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:23:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:23:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:23:26,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:23:26,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 350 transitions, 4405 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:23:26,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:23:26,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:23:26,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:23:28,320 INFO L124 PetriNetUnfolderBase]: 3051/5346 cut-off events. [2024-05-12 11:23:28,320 INFO L125 PetriNetUnfolderBase]: For 186956/187129 co-relation queries the response was YES. [2024-05-12 11:23:28,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32567 conditions, 5346 events. 3051/5346 cut-off events. For 186956/187129 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 37035 event pairs, 653 based on Foata normal form. 51/5226 useless extension candidates. Maximal degree in co-relation 32407. Up to 4563 conditions per place. [2024-05-12 11:23:28,390 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 347 selfloop transitions, 34 changer transitions 0/393 dead transitions. [2024-05-12 11:23:28,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 393 transitions, 5377 flow [2024-05-12 11:23:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:23:28,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:23:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-05-12 11:23:28,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-05-12 11:23:28,392 INFO L175 Difference]: Start difference. First operand has 349 places, 350 transitions, 4405 flow. Second operand 10 states and 180 transitions. [2024-05-12 11:23:28,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 393 transitions, 5377 flow [2024-05-12 11:23:29,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 393 transitions, 5291 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-05-12 11:23:29,430 INFO L231 Difference]: Finished difference. Result has 351 places, 351 transitions, 4409 flow [2024-05-12 11:23:29,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4319, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4409, PETRI_PLACES=351, PETRI_TRANSITIONS=351} [2024-05-12 11:23:29,430 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 309 predicate places. [2024-05-12 11:23:29,430 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 351 transitions, 4409 flow [2024-05-12 11:23:29,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:23:29,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:23:29,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:23:29,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-05-12 11:23:29,431 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:23:29,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:23:29,431 INFO L85 PathProgramCache]: Analyzing trace with hash -365372614, now seen corresponding path program 8 times [2024-05-12 11:23:29,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:23:29,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934143381] [2024-05-12 11:23:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:23:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:23:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:23:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:23:38,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:23:38,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934143381] [2024-05-12 11:23:38,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934143381] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:23:38,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:23:38,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:23:38,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373884552] [2024-05-12 11:23:38,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:23:38,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:23:38,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:23:38,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:23:38,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:23:38,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:23:38,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 351 transitions, 4409 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:23:38,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:23:38,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:23:38,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:23:40,495 INFO L124 PetriNetUnfolderBase]: 3047/5354 cut-off events. [2024-05-12 11:23:40,495 INFO L125 PetriNetUnfolderBase]: For 181806/181999 co-relation queries the response was YES. [2024-05-12 11:23:40,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32346 conditions, 5354 events. 3047/5354 cut-off events. For 181806/181999 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 37232 event pairs, 601 based on Foata normal form. 63/5249 useless extension candidates. Maximal degree in co-relation 32185. Up to 4435 conditions per place. [2024-05-12 11:23:40,564 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 343 selfloop transitions, 44 changer transitions 0/399 dead transitions. [2024-05-12 11:23:40,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 399 transitions, 5409 flow [2024-05-12 11:23:40,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:23:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:23:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-05-12 11:23:40,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-05-12 11:23:40,565 INFO L175 Difference]: Start difference. First operand has 351 places, 351 transitions, 4409 flow. Second operand 11 states and 201 transitions. [2024-05-12 11:23:40,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 399 transitions, 5409 flow [2024-05-12 11:23:41,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 399 transitions, 5317 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-05-12 11:23:41,510 INFO L231 Difference]: Finished difference. Result has 354 places, 351 transitions, 4410 flow [2024-05-12 11:23:41,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4317, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4410, PETRI_PLACES=354, PETRI_TRANSITIONS=351} [2024-05-12 11:23:41,511 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 312 predicate places. [2024-05-12 11:23:41,511 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 351 transitions, 4410 flow [2024-05-12 11:23:41,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:23:41,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:23:41,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:23:41,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-05-12 11:23:41,512 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:23:41,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:23:41,512 INFO L85 PathProgramCache]: Analyzing trace with hash -559312024, now seen corresponding path program 9 times [2024-05-12 11:23:41,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:23:41,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144095249] [2024-05-12 11:23:41,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:23:41,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:23:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:23:49,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:23:49,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:23:49,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144095249] [2024-05-12 11:23:49,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144095249] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:23:49,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:23:49,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:23:49,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628524816] [2024-05-12 11:23:49,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:23:49,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:23:49,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:23:49,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:23:49,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:23:49,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:23:49,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 351 transitions, 4410 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:23:49,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:23:49,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:23:49,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:23:51,641 INFO L124 PetriNetUnfolderBase]: 3043/5402 cut-off events. [2024-05-12 11:23:51,641 INFO L125 PetriNetUnfolderBase]: For 176619/176807 co-relation queries the response was YES. [2024-05-12 11:23:51,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32220 conditions, 5402 events. 3043/5402 cut-off events. For 176619/176807 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 38071 event pairs, 580 based on Foata normal form. 57/5304 useless extension candidates. Maximal degree in co-relation 32058. Up to 4308 conditions per place. [2024-05-12 11:23:51,708 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 336 selfloop transitions, 52 changer transitions 0/400 dead transitions. [2024-05-12 11:23:51,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 400 transitions, 5416 flow [2024-05-12 11:23:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:23:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:23:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-05-12 11:23:51,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-05-12 11:23:51,712 INFO L175 Difference]: Start difference. First operand has 354 places, 351 transitions, 4410 flow. Second operand 11 states and 204 transitions. [2024-05-12 11:23:51,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 400 transitions, 5416 flow [2024-05-12 11:23:52,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 400 transitions, 5295 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-05-12 11:23:52,557 INFO L231 Difference]: Finished difference. Result has 355 places, 351 transitions, 4398 flow [2024-05-12 11:23:52,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4289, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4398, PETRI_PLACES=355, PETRI_TRANSITIONS=351} [2024-05-12 11:23:52,557 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-05-12 11:23:52,558 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 351 transitions, 4398 flow [2024-05-12 11:23:52,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:23:52,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:23:52,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:23:52,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-05-12 11:23:52,558 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:23:52,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:23:52,559 INFO L85 PathProgramCache]: Analyzing trace with hash -564881949, now seen corresponding path program 9 times [2024-05-12 11:23:52,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:23:52,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354793732] [2024-05-12 11:23:52,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:23:52,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:23:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:23:59,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:23:59,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:23:59,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354793732] [2024-05-12 11:23:59,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354793732] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:23:59,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:23:59,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:23:59,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258522475] [2024-05-12 11:23:59,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:23:59,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:23:59,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:23:59,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:23:59,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:23:59,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:23:59,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 351 transitions, 4398 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:23:59,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:23:59,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:23:59,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:24:01,364 INFO L124 PetriNetUnfolderBase]: 3056/5438 cut-off events. [2024-05-12 11:24:01,364 INFO L125 PetriNetUnfolderBase]: For 179465/179653 co-relation queries the response was YES. [2024-05-12 11:24:01,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32392 conditions, 5438 events. 3056/5438 cut-off events. For 179465/179653 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 38312 event pairs, 633 based on Foata normal form. 60/5355 useless extension candidates. Maximal degree in co-relation 32229. Up to 4423 conditions per place. [2024-05-12 11:24:01,431 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 335 selfloop transitions, 48 changer transitions 0/395 dead transitions. [2024-05-12 11:24:01,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 395 transitions, 5388 flow [2024-05-12 11:24:01,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:24:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:24:01,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-05-12 11:24:01,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-05-12 11:24:01,432 INFO L175 Difference]: Start difference. First operand has 355 places, 351 transitions, 4398 flow. Second operand 10 states and 187 transitions. [2024-05-12 11:24:01,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 395 transitions, 5388 flow [2024-05-12 11:24:02,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 395 transitions, 5270 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-05-12 11:24:02,347 INFO L231 Difference]: Finished difference. Result has 355 places, 352 transitions, 4408 flow [2024-05-12 11:24:02,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4280, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4408, PETRI_PLACES=355, PETRI_TRANSITIONS=352} [2024-05-12 11:24:02,347 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-05-12 11:24:02,348 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 352 transitions, 4408 flow [2024-05-12 11:24:02,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:24:02,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:24:02,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:24:02,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-05-12 11:24:02,348 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:24:02,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:24:02,349 INFO L85 PathProgramCache]: Analyzing trace with hash -564876214, now seen corresponding path program 10 times [2024-05-12 11:24:02,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:24:02,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998858176] [2024-05-12 11:24:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:24:02,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:24:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:24:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:24:11,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:24:11,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998858176] [2024-05-12 11:24:11,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998858176] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:24:11,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:24:11,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 11:24:11,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154600753] [2024-05-12 11:24:11,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:24:11,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 11:24:11,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:24:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 11:24:11,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 11:24:11,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:24:11,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 352 transitions, 4408 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:24:11,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:24:11,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:24:11,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:24:13,261 INFO L124 PetriNetUnfolderBase]: 3051/5388 cut-off events. [2024-05-12 11:24:13,261 INFO L125 PetriNetUnfolderBase]: For 173568/173758 co-relation queries the response was YES. [2024-05-12 11:24:13,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32025 conditions, 5388 events. 3051/5388 cut-off events. For 173568/173758 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 37790 event pairs, 578 based on Foata normal form. 62/5295 useless extension candidates. Maximal degree in co-relation 31861. Up to 4322 conditions per place. [2024-05-12 11:24:13,333 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 335 selfloop transitions, 54 changer transitions 0/401 dead transitions. [2024-05-12 11:24:13,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 401 transitions, 5416 flow [2024-05-12 11:24:13,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 11:24:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 11:24:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-05-12 11:24:13,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-05-12 11:24:13,334 INFO L175 Difference]: Start difference. First operand has 355 places, 352 transitions, 4408 flow. Second operand 11 states and 203 transitions. [2024-05-12 11:24:13,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 401 transitions, 5416 flow [2024-05-12 11:24:14,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 401 transitions, 5288 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-05-12 11:24:14,162 INFO L231 Difference]: Finished difference. Result has 358 places, 352 transitions, 4393 flow [2024-05-12 11:24:14,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4280, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4393, PETRI_PLACES=358, PETRI_TRANSITIONS=352} [2024-05-12 11:24:14,163 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 316 predicate places. [2024-05-12 11:24:14,163 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 352 transitions, 4393 flow [2024-05-12 11:24:14,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 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) [2024-05-12 11:24:14,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:24:14,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:24:14,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-05-12 11:24:14,163 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:24:14,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:24:14,164 INFO L85 PathProgramCache]: Analyzing trace with hash -564881794, now seen corresponding path program 11 times [2024-05-12 11:24:14,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:24:14,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727706424] [2024-05-12 11:24:14,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:24:14,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:24:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:24:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:24:21,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:24:21,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727706424] [2024-05-12 11:24:21,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727706424] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:24:21,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:24:21,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:24:21,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624049395] [2024-05-12 11:24:21,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:24:21,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:24:21,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:24:21,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:24:21,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:24:22,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:24:22,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 352 transitions, 4393 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:24:22,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:24:22,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:24:22,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:24:23,810 INFO L124 PetriNetUnfolderBase]: 3048/5392 cut-off events. [2024-05-12 11:24:23,810 INFO L125 PetriNetUnfolderBase]: For 165513/165649 co-relation queries the response was YES. [2024-05-12 11:24:23,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31759 conditions, 5392 events. 3048/5392 cut-off events. For 165513/165649 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 37713 event pairs, 559 based on Foata normal form. 45/5283 useless extension candidates. Maximal degree in co-relation 31594. Up to 4061 conditions per place. [2024-05-12 11:24:23,883 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 317 selfloop transitions, 67 changer transitions 0/396 dead transitions. [2024-05-12 11:24:23,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 396 transitions, 5365 flow [2024-05-12 11:24:23,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:24:23,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:24:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-05-12 11:24:23,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026315789473684 [2024-05-12 11:24:23,884 INFO L175 Difference]: Start difference. First operand has 358 places, 352 transitions, 4393 flow. Second operand 10 states and 191 transitions. [2024-05-12 11:24:23,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 396 transitions, 5365 flow [2024-05-12 11:24:24,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 396 transitions, 5204 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-05-12 11:24:24,698 INFO L231 Difference]: Finished difference. Result has 357 places, 352 transitions, 4374 flow [2024-05-12 11:24:24,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4232, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4374, PETRI_PLACES=357, PETRI_TRANSITIONS=352} [2024-05-12 11:24:24,698 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 315 predicate places. [2024-05-12 11:24:24,698 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 352 transitions, 4374 flow [2024-05-12 11:24:24,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:24:24,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:24:24,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:24:24,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-05-12 11:24:24,699 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:24:24,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:24:24,699 INFO L85 PathProgramCache]: Analyzing trace with hash -565029819, now seen corresponding path program 10 times [2024-05-12 11:24:24,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:24:24,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594879866] [2024-05-12 11:24:24,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:24:24,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:24:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 11:24:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 11:24:30,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 11:24:30,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594879866] [2024-05-12 11:24:30,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594879866] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 11:24:30,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 11:24:30,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 11:24:30,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502582171] [2024-05-12 11:24:30,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 11:24:30,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 11:24:30,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 11:24:30,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 11:24:30,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 11:24:30,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-05-12 11:24:30,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 352 transitions, 4374 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:24:30,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 11:24:30,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-05-12 11:24:30,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 11:24:32,359 INFO L124 PetriNetUnfolderBase]: 3130/5527 cut-off events. [2024-05-12 11:24:32,359 INFO L125 PetriNetUnfolderBase]: For 207495/207673 co-relation queries the response was YES. [2024-05-12 11:24:32,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33321 conditions, 5527 events. 3130/5527 cut-off events. For 207495/207673 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 38958 event pairs, 632 based on Foata normal form. 59/5431 useless extension candidates. Maximal degree in co-relation 33156. Up to 4186 conditions per place. [2024-05-12 11:24:32,436 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 341 selfloop transitions, 50 changer transitions 0/403 dead transitions. [2024-05-12 11:24:32,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 403 transitions, 5654 flow [2024-05-12 11:24:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 11:24:32,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 11:24:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-05-12 11:24:32,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-05-12 11:24:32,437 INFO L175 Difference]: Start difference. First operand has 357 places, 352 transitions, 4374 flow. Second operand 10 states and 193 transitions. [2024-05-12 11:24:32,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 403 transitions, 5654 flow [2024-05-12 11:24:33,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 403 transitions, 5498 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-05-12 11:24:33,482 INFO L231 Difference]: Finished difference. Result has 357 places, 353 transitions, 4354 flow [2024-05-12 11:24:33,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4220, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4354, PETRI_PLACES=357, PETRI_TRANSITIONS=353} [2024-05-12 11:24:33,482 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 315 predicate places. [2024-05-12 11:24:33,482 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 353 transitions, 4354 flow [2024-05-12 11:24:33,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 11:24:33,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 11:24:33,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 11:24:33,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-05-12 11:24:33,483 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-05-12 11:24:33,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 11:24:33,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1979843356, now seen corresponding path program 6 times [2024-05-12 11:24:33,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 11:24:33,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845714096] [2024-05-12 11:24:33,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 11:24:33,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 11:24:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15